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Merge branch 'docs-next' of git://git.lwn.net/linux-2.6
[mirror_ubuntu-hirsute-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.us>
7 * (c) 2004 Chris Pascoe <c.pascoe@itee.uq.edu.au>
8 * (c) 2004 Gerd Knorr <kraxel@bytesex.org>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 */
24
25 #include <linux/module.h>
26 #include <linux/slab.h>
27 #include <linux/init.h>
28 #include <linux/device.h>
29 #include <linux/dma-mapping.h>
30 #include <linux/interrupt.h>
31 #include <asm/delay.h>
32
33 #include "cx88.h"
34
35 /* ------------------------------------------------------------------ */
36
37 MODULE_DESCRIPTION("mpeg driver for cx2388x based TV cards");
38 MODULE_AUTHOR("Jelle Foks <jelle@foks.us>");
39 MODULE_AUTHOR("Chris Pascoe <c.pascoe@itee.uq.edu.au>");
40 MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
41 MODULE_LICENSE("GPL");
42
43 static unsigned int debug;
44 module_param(debug,int,0644);
45 MODULE_PARM_DESC(debug,"enable debug messages [mpeg]");
46
47 #define dprintk(level,fmt, arg...) if (debug >= level) \
48 printk(KERN_DEBUG "%s/2-mpeg: " fmt, dev->core->name, ## arg)
49
50 #define mpeg_dbg(level,fmt, arg...) if (debug >= level) \
51 printk(KERN_DEBUG "%s/2-mpeg: " fmt, core->name, ## arg)
52
53 #if defined(CONFIG_MODULES) && defined(MODULE)
54 static void request_module_async(struct work_struct *work)
55 {
56 struct cx8802_dev *dev=container_of(work, struct cx8802_dev, request_module_wk);
57
58 if (dev->core->board.mpeg & CX88_MPEG_DVB)
59 request_module("cx88-dvb");
60 if (dev->core->board.mpeg & CX88_MPEG_BLACKBIRD)
61 request_module("cx88-blackbird");
62 }
63
64 static void request_modules(struct cx8802_dev *dev)
65 {
66 INIT_WORK(&dev->request_module_wk, request_module_async);
67 schedule_work(&dev->request_module_wk);
68 }
69 #else
70 #define request_modules(dev)
71 #endif /* CONFIG_MODULES */
72
73
74 static LIST_HEAD(cx8802_devlist);
75 /* ------------------------------------------------------------------ */
76
77 static int cx8802_start_dma(struct cx8802_dev *dev,
78 struct cx88_dmaqueue *q,
79 struct cx88_buffer *buf)
80 {
81 struct cx88_core *core = dev->core;
82
83 dprintk(1, "cx8802_start_dma w: %d, h: %d, f: %d\n",
84 buf->vb.width, buf->vb.height, buf->vb.field);
85
86 /* setup fifo + format */
87 cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH28],
88 dev->ts_packet_size, buf->risc.dma);
89
90 /* write TS length to chip */
91 cx_write(MO_TS_LNGTH, buf->vb.width);
92
93 /* FIXME: this needs a review.
94 * also: move to cx88-blackbird + cx88-dvb source files? */
95
96 dprintk( 1, "core->active_type_id = 0x%08x\n", core->active_type_id);
97
98 if ( (core->active_type_id == CX88_MPEG_DVB) &&
99 (core->board.mpeg & CX88_MPEG_DVB) ) {
100
101 dprintk( 1, "cx8802_start_dma doing .dvb\n");
102 /* negedge driven & software reset */
103 cx_write(TS_GEN_CNTRL, 0x0040 | dev->ts_gen_cntrl);
104 udelay(100);
105 cx_write(MO_PINMUX_IO, 0x00);
106 cx_write(TS_HW_SOP_CNTRL, 0x47<<16|188<<4|0x01);
107 switch (core->boardnr) {
108 case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_Q:
109 case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_T:
110 case CX88_BOARD_DVICO_FUSIONHDTV_5_GOLD:
111 case CX88_BOARD_PCHDTV_HD5500:
112 cx_write(TS_SOP_STAT, 1<<13);
113 break;
114 case CX88_BOARD_SAMSUNG_SMT_7020:
115 cx_write(TS_SOP_STAT, 0x00);
116 break;
117 case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
118 case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
119 cx_write(MO_PINMUX_IO, 0x88); /* Enable MPEG parallel IO and video signal pins */
120 udelay(100);
121 break;
122 case CX88_BOARD_HAUPPAUGE_HVR1300:
123 /* Enable MPEG parallel IO and video signal pins */
124 cx_write(MO_PINMUX_IO, 0x88);
125 cx_write(TS_SOP_STAT, 0);
126 cx_write(TS_VALERR_CNTRL, 0);
127 break;
128 case CX88_BOARD_PINNACLE_PCTV_HD_800i:
129 /* Enable MPEG parallel IO and video signal pins */
130 cx_write(MO_PINMUX_IO, 0x88);
131 cx_write(TS_HW_SOP_CNTRL, (0x47 << 16) | (188 << 4));
132 dev->ts_gen_cntrl = 5;
133 cx_write(TS_SOP_STAT, 0);
134 cx_write(TS_VALERR_CNTRL, 0);
135 udelay(100);
136 break;
137 default:
138 cx_write(TS_SOP_STAT, 0x00);
139 break;
140 }
141 cx_write(TS_GEN_CNTRL, dev->ts_gen_cntrl);
142 udelay(100);
143 } else if ( (core->active_type_id == CX88_MPEG_BLACKBIRD) &&
144 (core->board.mpeg & CX88_MPEG_BLACKBIRD) ) {
145 dprintk( 1, "cx8802_start_dma doing .blackbird\n");
146 cx_write(MO_PINMUX_IO, 0x88); /* enable MPEG parallel IO */
147
148 cx_write(TS_GEN_CNTRL, 0x46); /* punctured clock TS & posedge driven & software reset */
149 udelay(100);
150
151 cx_write(TS_HW_SOP_CNTRL, 0x408); /* mpeg start byte */
152 cx_write(TS_VALERR_CNTRL, 0x2000);
153
154 cx_write(TS_GEN_CNTRL, 0x06); /* punctured clock TS & posedge driven */
155 udelay(100);
156 } else {
157 printk( "%s() Failed. Unsupported value in .mpeg (0x%08x)\n", __func__,
158 core->board.mpeg );
159 return -EINVAL;
160 }
161
162 /* reset counter */
163 cx_write(MO_TS_GPCNTRL, GP_COUNT_CONTROL_RESET);
164 q->count = 1;
165
166 /* enable irqs */
167 dprintk( 1, "setting the interrupt mask\n" );
168 cx_set(MO_PCI_INTMSK, core->pci_irqmask | PCI_INT_TSINT);
169 cx_set(MO_TS_INTMSK, 0x1f0011);
170
171 /* start dma */
172 cx_set(MO_DEV_CNTRL2, (1<<5));
173 cx_set(MO_TS_DMACNTRL, 0x11);
174 return 0;
175 }
176
177 static int cx8802_stop_dma(struct cx8802_dev *dev)
178 {
179 struct cx88_core *core = dev->core;
180 dprintk( 1, "cx8802_stop_dma\n" );
181
182 /* stop dma */
183 cx_clear(MO_TS_DMACNTRL, 0x11);
184
185 /* disable irqs */
186 cx_clear(MO_PCI_INTMSK, PCI_INT_TSINT);
187 cx_clear(MO_TS_INTMSK, 0x1f0011);
188
189 /* Reset the controller */
190 cx_write(TS_GEN_CNTRL, 0xcd);
191 return 0;
192 }
193
194 static int cx8802_restart_queue(struct cx8802_dev *dev,
195 struct cx88_dmaqueue *q)
196 {
197 struct cx88_buffer *buf;
198
199 dprintk( 1, "cx8802_restart_queue\n" );
200 if (list_empty(&q->active))
201 {
202 struct cx88_buffer *prev;
203 prev = NULL;
204
205 dprintk(1, "cx8802_restart_queue: queue is empty\n" );
206
207 for (;;) {
208 if (list_empty(&q->queued))
209 return 0;
210 buf = list_entry(q->queued.next, struct cx88_buffer, vb.queue);
211 if (NULL == prev) {
212 list_del(&buf->vb.queue);
213 list_add_tail(&buf->vb.queue,&q->active);
214 cx8802_start_dma(dev, q, buf);
215 buf->vb.state = VIDEOBUF_ACTIVE;
216 buf->count = q->count++;
217 mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
218 dprintk(1,"[%p/%d] restart_queue - first active\n",
219 buf,buf->vb.i);
220
221 } else if (prev->vb.width == buf->vb.width &&
222 prev->vb.height == buf->vb.height &&
223 prev->fmt == buf->fmt) {
224 list_del(&buf->vb.queue);
225 list_add_tail(&buf->vb.queue,&q->active);
226 buf->vb.state = VIDEOBUF_ACTIVE;
227 buf->count = q->count++;
228 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
229 dprintk(1,"[%p/%d] restart_queue - move to active\n",
230 buf,buf->vb.i);
231 } else {
232 return 0;
233 }
234 prev = buf;
235 }
236 return 0;
237 }
238
239 buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
240 dprintk(2,"restart_queue [%p/%d]: restart dma\n",
241 buf, buf->vb.i);
242 cx8802_start_dma(dev, q, buf);
243 list_for_each_entry(buf, &q->active, vb.queue)
244 buf->count = q->count++;
245 mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
246 return 0;
247 }
248
249 /* ------------------------------------------------------------------ */
250
251 int cx8802_buf_prepare(struct videobuf_queue *q, struct cx8802_dev *dev,
252 struct cx88_buffer *buf, enum v4l2_field field)
253 {
254 int size = dev->ts_packet_size * dev->ts_packet_count;
255 struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
256 int rc;
257
258 dprintk(1, "%s: %p\n", __func__, buf);
259 if (0 != buf->vb.baddr && buf->vb.bsize < size)
260 return -EINVAL;
261
262 if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
263 buf->vb.width = dev->ts_packet_size;
264 buf->vb.height = dev->ts_packet_count;
265 buf->vb.size = size;
266 buf->vb.field = field /*V4L2_FIELD_TOP*/;
267
268 if (0 != (rc = videobuf_iolock(q,&buf->vb,NULL)))
269 goto fail;
270 cx88_risc_databuffer(dev->pci, &buf->risc,
271 dma->sglist,
272 buf->vb.width, buf->vb.height, 0);
273 }
274 buf->vb.state = VIDEOBUF_PREPARED;
275 return 0;
276
277 fail:
278 cx88_free_buffer(q,buf);
279 return rc;
280 }
281
282 void cx8802_buf_queue(struct cx8802_dev *dev, struct cx88_buffer *buf)
283 {
284 struct cx88_buffer *prev;
285 struct cx88_dmaqueue *cx88q = &dev->mpegq;
286
287 dprintk( 1, "cx8802_buf_queue\n" );
288 /* add jump to stopper */
289 buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
290 buf->risc.jmp[1] = cpu_to_le32(cx88q->stopper.dma);
291
292 if (list_empty(&cx88q->active)) {
293 dprintk( 1, "queue is empty - first active\n" );
294 list_add_tail(&buf->vb.queue,&cx88q->active);
295 cx8802_start_dma(dev, cx88q, buf);
296 buf->vb.state = VIDEOBUF_ACTIVE;
297 buf->count = cx88q->count++;
298 mod_timer(&cx88q->timeout, jiffies+BUFFER_TIMEOUT);
299 dprintk(1,"[%p/%d] %s - first active\n",
300 buf, buf->vb.i, __func__);
301
302 } else {
303 dprintk( 1, "queue is not empty - append to active\n" );
304 prev = list_entry(cx88q->active.prev, struct cx88_buffer, vb.queue);
305 list_add_tail(&buf->vb.queue,&cx88q->active);
306 buf->vb.state = VIDEOBUF_ACTIVE;
307 buf->count = cx88q->count++;
308 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
309 dprintk( 1, "[%p/%d] %s - append to active\n",
310 buf, buf->vb.i, __func__);
311 }
312 }
313
314 /* ----------------------------------------------------------- */
315
316 static void do_cancel_buffers(struct cx8802_dev *dev, char *reason, int restart)
317 {
318 struct cx88_dmaqueue *q = &dev->mpegq;
319 struct cx88_buffer *buf;
320 unsigned long flags;
321
322 spin_lock_irqsave(&dev->slock,flags);
323 while (!list_empty(&q->active)) {
324 buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
325 list_del(&buf->vb.queue);
326 buf->vb.state = VIDEOBUF_ERROR;
327 wake_up(&buf->vb.done);
328 dprintk(1,"[%p/%d] %s - dma=0x%08lx\n",
329 buf, buf->vb.i, reason, (unsigned long)buf->risc.dma);
330 }
331 if (restart)
332 {
333 dprintk(1, "restarting queue\n" );
334 cx8802_restart_queue(dev,q);
335 }
336 spin_unlock_irqrestore(&dev->slock,flags);
337 }
338
339 void cx8802_cancel_buffers(struct cx8802_dev *dev)
340 {
341 struct cx88_dmaqueue *q = &dev->mpegq;
342
343 dprintk( 1, "cx8802_cancel_buffers" );
344 del_timer_sync(&q->timeout);
345 cx8802_stop_dma(dev);
346 do_cancel_buffers(dev,"cancel",0);
347 }
348
349 static void cx8802_timeout(unsigned long data)
350 {
351 struct cx8802_dev *dev = (struct cx8802_dev*)data;
352
353 dprintk(1, "%s\n",__func__);
354
355 if (debug)
356 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
357 cx8802_stop_dma(dev);
358 do_cancel_buffers(dev,"timeout",1);
359 }
360
361 static char *cx88_mpeg_irqs[32] = {
362 "ts_risci1", NULL, NULL, NULL,
363 "ts_risci2", NULL, NULL, NULL,
364 "ts_oflow", NULL, NULL, NULL,
365 "ts_sync", NULL, NULL, NULL,
366 "opc_err", "par_err", "rip_err", "pci_abort",
367 "ts_err?",
368 };
369
370 static void cx8802_mpeg_irq(struct cx8802_dev *dev)
371 {
372 struct cx88_core *core = dev->core;
373 u32 status, mask, count;
374
375 dprintk( 1, "cx8802_mpeg_irq\n" );
376 status = cx_read(MO_TS_INTSTAT);
377 mask = cx_read(MO_TS_INTMSK);
378 if (0 == (status & mask))
379 return;
380
381 cx_write(MO_TS_INTSTAT, status);
382
383 if (debug || (status & mask & ~0xff))
384 cx88_print_irqbits(core->name, "irq mpeg ",
385 cx88_mpeg_irqs, ARRAY_SIZE(cx88_mpeg_irqs),
386 status, mask);
387
388 /* risc op code error */
389 if (status & (1 << 16)) {
390 printk(KERN_WARNING "%s: mpeg risc op code error\n",core->name);
391 cx_clear(MO_TS_DMACNTRL, 0x11);
392 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
393 }
394
395 /* risc1 y */
396 if (status & 0x01) {
397 dprintk( 1, "wake up\n" );
398 spin_lock(&dev->slock);
399 count = cx_read(MO_TS_GPCNT);
400 cx88_wakeup(dev->core, &dev->mpegq, count);
401 spin_unlock(&dev->slock);
402 }
403
404 /* risc2 y */
405 if (status & 0x10) {
406 spin_lock(&dev->slock);
407 cx8802_restart_queue(dev,&dev->mpegq);
408 spin_unlock(&dev->slock);
409 }
410
411 /* other general errors */
412 if (status & 0x1f0100) {
413 dprintk( 0, "general errors: 0x%08x\n", status & 0x1f0100 );
414 spin_lock(&dev->slock);
415 cx8802_stop_dma(dev);
416 cx8802_restart_queue(dev,&dev->mpegq);
417 spin_unlock(&dev->slock);
418 }
419 }
420
421 #define MAX_IRQ_LOOP 10
422
423 static irqreturn_t cx8802_irq(int irq, void *dev_id)
424 {
425 struct cx8802_dev *dev = dev_id;
426 struct cx88_core *core = dev->core;
427 u32 status;
428 int loop, handled = 0;
429
430 for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
431 status = cx_read(MO_PCI_INTSTAT) &
432 (core->pci_irqmask | PCI_INT_TSINT);
433 if (0 == status)
434 goto out;
435 dprintk( 1, "cx8802_irq\n" );
436 dprintk( 1, " loop: %d/%d\n", loop, MAX_IRQ_LOOP );
437 dprintk( 1, " status: %d\n", status );
438 handled = 1;
439 cx_write(MO_PCI_INTSTAT, status);
440
441 if (status & core->pci_irqmask)
442 cx88_core_irq(core,status);
443 if (status & PCI_INT_TSINT)
444 cx8802_mpeg_irq(dev);
445 };
446 if (MAX_IRQ_LOOP == loop) {
447 dprintk( 0, "clearing mask\n" );
448 printk(KERN_WARNING "%s/0: irq loop -- clearing mask\n",
449 core->name);
450 cx_write(MO_PCI_INTMSK,0);
451 }
452
453 out:
454 return IRQ_RETVAL(handled);
455 }
456
457 static int cx8802_init_common(struct cx8802_dev *dev)
458 {
459 struct cx88_core *core = dev->core;
460 int err;
461
462 /* pci init */
463 if (pci_enable_device(dev->pci))
464 return -EIO;
465 pci_set_master(dev->pci);
466 if (!pci_dma_supported(dev->pci,DMA_BIT_MASK(32))) {
467 printk("%s/2: Oops: no 32bit PCI DMA ???\n",dev->core->name);
468 return -EIO;
469 }
470
471 pci_read_config_byte(dev->pci, PCI_CLASS_REVISION, &dev->pci_rev);
472 pci_read_config_byte(dev->pci, PCI_LATENCY_TIMER, &dev->pci_lat);
473 printk(KERN_INFO "%s/2: found at %s, rev: %d, irq: %d, "
474 "latency: %d, mmio: 0x%llx\n", dev->core->name,
475 pci_name(dev->pci), dev->pci_rev, dev->pci->irq,
476 dev->pci_lat,(unsigned long long)pci_resource_start(dev->pci,0));
477
478 /* initialize driver struct */
479 spin_lock_init(&dev->slock);
480
481 /* init dma queue */
482 INIT_LIST_HEAD(&dev->mpegq.active);
483 INIT_LIST_HEAD(&dev->mpegq.queued);
484 dev->mpegq.timeout.function = cx8802_timeout;
485 dev->mpegq.timeout.data = (unsigned long)dev;
486 init_timer(&dev->mpegq.timeout);
487 cx88_risc_stopper(dev->pci,&dev->mpegq.stopper,
488 MO_TS_DMACNTRL,0x11,0x00);
489
490 /* get irq */
491 err = request_irq(dev->pci->irq, cx8802_irq,
492 IRQF_SHARED | IRQF_DISABLED, dev->core->name, dev);
493 if (err < 0) {
494 printk(KERN_ERR "%s: can't get IRQ %d\n",
495 dev->core->name, dev->pci->irq);
496 return err;
497 }
498 cx_set(MO_PCI_INTMSK, core->pci_irqmask);
499
500 /* everything worked */
501 pci_set_drvdata(dev->pci,dev);
502 return 0;
503 }
504
505 static void cx8802_fini_common(struct cx8802_dev *dev)
506 {
507 dprintk( 2, "cx8802_fini_common\n" );
508 cx8802_stop_dma(dev);
509 pci_disable_device(dev->pci);
510
511 /* unregister stuff */
512 free_irq(dev->pci->irq, dev);
513 pci_set_drvdata(dev->pci, NULL);
514
515 /* free memory */
516 btcx_riscmem_free(dev->pci,&dev->mpegq.stopper);
517 }
518
519 /* ----------------------------------------------------------- */
520
521 static int cx8802_suspend_common(struct pci_dev *pci_dev, pm_message_t state)
522 {
523 struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
524 struct cx88_core *core = dev->core;
525
526 /* stop mpeg dma */
527 spin_lock(&dev->slock);
528 if (!list_empty(&dev->mpegq.active)) {
529 dprintk( 2, "suspend\n" );
530 printk("%s: suspend mpeg\n", core->name);
531 cx8802_stop_dma(dev);
532 del_timer(&dev->mpegq.timeout);
533 }
534 spin_unlock(&dev->slock);
535
536 /* FIXME -- shutdown device */
537 cx88_shutdown(dev->core);
538
539 pci_save_state(pci_dev);
540 if (0 != pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state))) {
541 pci_disable_device(pci_dev);
542 dev->state.disabled = 1;
543 }
544 return 0;
545 }
546
547 static int cx8802_resume_common(struct pci_dev *pci_dev)
548 {
549 struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
550 struct cx88_core *core = dev->core;
551 int err;
552
553 if (dev->state.disabled) {
554 err=pci_enable_device(pci_dev);
555 if (err) {
556 printk(KERN_ERR "%s: can't enable device\n",
557 dev->core->name);
558 return err;
559 }
560 dev->state.disabled = 0;
561 }
562 err=pci_set_power_state(pci_dev, PCI_D0);
563 if (err) {
564 printk(KERN_ERR "%s: can't enable device\n",
565 dev->core->name);
566 pci_disable_device(pci_dev);
567 dev->state.disabled = 1;
568
569 return err;
570 }
571 pci_restore_state(pci_dev);
572
573 /* FIXME: re-initialize hardware */
574 cx88_reset(dev->core);
575
576 /* restart video+vbi capture */
577 spin_lock(&dev->slock);
578 if (!list_empty(&dev->mpegq.active)) {
579 printk("%s: resume mpeg\n", core->name);
580 cx8802_restart_queue(dev,&dev->mpegq);
581 }
582 spin_unlock(&dev->slock);
583
584 return 0;
585 }
586
587 struct cx8802_driver * cx8802_get_driver(struct cx8802_dev *dev, enum cx88_board_type btype)
588 {
589 struct cx8802_driver *d;
590
591 list_for_each_entry(d, &dev->drvlist, drvlist)
592 if (d->type_id == btype)
593 return d;
594
595 return NULL;
596 }
597
598 /* Driver asked for hardware access. */
599 static int cx8802_request_acquire(struct cx8802_driver *drv)
600 {
601 struct cx88_core *core = drv->core;
602 unsigned int i;
603
604 /* Fail a request for hardware if the device is busy. */
605 if (core->active_type_id != CX88_BOARD_NONE &&
606 core->active_type_id != drv->type_id)
607 return -EBUSY;
608
609 core->input = 0;
610 for (i = 0;
611 i < (sizeof(core->board.input) / sizeof(struct cx88_input));
612 i++) {
613 if (core->board.input[i].type == CX88_VMUX_DVB) {
614 core->input = i;
615 break;
616 }
617 }
618
619 if (drv->advise_acquire)
620 {
621 mutex_lock(&drv->core->lock);
622 core->active_ref++;
623 if (core->active_type_id == CX88_BOARD_NONE) {
624 core->active_type_id = drv->type_id;
625 drv->advise_acquire(drv);
626 }
627 mutex_unlock(&drv->core->lock);
628
629 mpeg_dbg(1,"%s() Post acquire GPIO=%x\n", __func__, 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 mutex_lock(&drv->core->lock);
641 if (drv->advise_release && --core->active_ref == 0)
642 {
643 drv->advise_release(drv);
644 core->active_type_id = CX88_BOARD_NONE;
645 mpeg_dbg(1,"%s() Post release GPIO=%x\n", __func__, cx_read(MO_GP0_IO));
646 }
647 mutex_unlock(&drv->core->lock);
648
649 return 0;
650 }
651
652 static int cx8802_check_driver(struct cx8802_driver *drv)
653 {
654 if (drv == NULL)
655 return -ENODEV;
656
657 if ((drv->type_id != CX88_MPEG_DVB) &&
658 (drv->type_id != CX88_MPEG_BLACKBIRD))
659 return -EINVAL;
660
661 if ((drv->hw_access != CX8802_DRVCTL_SHARED) &&
662 (drv->hw_access != CX8802_DRVCTL_EXCLUSIVE))
663 return -EINVAL;
664
665 if ((drv->probe == NULL) ||
666 (drv->remove == NULL) ||
667 (drv->advise_acquire == NULL) ||
668 (drv->advise_release == NULL))
669 return -EINVAL;
670
671 return 0;
672 }
673
674 int cx8802_register_driver(struct cx8802_driver *drv)
675 {
676 struct cx8802_dev *dev;
677 struct cx8802_driver *driver;
678 int err, i = 0;
679
680 printk(KERN_INFO
681 "cx88/2: registering cx8802 driver, type: %s access: %s\n",
682 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
683 drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
684
685 if ((err = cx8802_check_driver(drv)) != 0) {
686 printk(KERN_ERR "cx88/2: cx8802_driver is invalid\n");
687 return err;
688 }
689
690 list_for_each_entry(dev, &cx8802_devlist, devlist) {
691 printk(KERN_INFO
692 "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
693 dev->core->name, dev->pci->subsystem_vendor,
694 dev->pci->subsystem_device, dev->core->board.name,
695 dev->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 = dev->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->drvlist, &dev->drvlist);
715 mutex_unlock(&drv->core->lock);
716 } else {
717 printk(KERN_ERR
718 "%s/2: cx8802 probe failed, err = %d\n",
719 dev->core->name, err);
720 }
721
722 }
723
724 return i ? 0 : -ENODEV;
725 }
726
727 int cx8802_unregister_driver(struct cx8802_driver *drv)
728 {
729 struct cx8802_dev *dev;
730 struct cx8802_driver *d, *dtmp;
731 int err = 0;
732
733 printk(KERN_INFO
734 "cx88/2: unregistering cx8802 driver, type: %s access: %s\n",
735 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
736 drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
737
738 list_for_each_entry(dev, &cx8802_devlist, devlist) {
739 printk(KERN_INFO
740 "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
741 dev->core->name, dev->pci->subsystem_vendor,
742 dev->pci->subsystem_device, dev->core->board.name,
743 dev->core->boardnr);
744
745 list_for_each_entry_safe(d, dtmp, &dev->drvlist, drvlist) {
746 /* only unregister the correct driver type */
747 if (d->type_id != drv->type_id)
748 continue;
749
750 err = d->remove(d);
751 if (err == 0) {
752 mutex_lock(&drv->core->lock);
753 list_del(&d->drvlist);
754 mutex_unlock(&drv->core->lock);
755 kfree(d);
756 } else
757 printk(KERN_ERR "%s/2: cx8802 driver remove "
758 "failed (%d)\n", dev->core->name, err);
759 }
760
761 }
762
763 return err;
764 }
765
766 /* ----------------------------------------------------------- */
767 static int __devinit cx8802_probe(struct pci_dev *pci_dev,
768 const struct pci_device_id *pci_id)
769 {
770 struct cx8802_dev *dev;
771 struct cx88_core *core;
772 int err;
773
774 /* general setup */
775 core = cx88_core_get(pci_dev);
776 if (NULL == core)
777 return -EINVAL;
778
779 printk("%s/2: cx2388x 8802 Driver Manager\n", core->name);
780
781 err = -ENODEV;
782 if (!core->board.mpeg)
783 goto fail_core;
784
785 err = -ENOMEM;
786 dev = kzalloc(sizeof(*dev),GFP_KERNEL);
787 if (NULL == dev)
788 goto fail_core;
789 dev->pci = pci_dev;
790 dev->core = core;
791
792 /* Maintain a reference so cx88-video can query the 8802 device. */
793 core->dvbdev = dev;
794
795 err = cx8802_init_common(dev);
796 if (err != 0)
797 goto fail_free;
798
799 INIT_LIST_HEAD(&dev->drvlist);
800 list_add_tail(&dev->devlist,&cx8802_devlist);
801
802 /* now autoload cx88-dvb or cx88-blackbird */
803 request_modules(dev);
804 return 0;
805
806 fail_free:
807 kfree(dev);
808 fail_core:
809 core->dvbdev = NULL;
810 cx88_core_put(core,pci_dev);
811 return err;
812 }
813
814 static void __devexit cx8802_remove(struct pci_dev *pci_dev)
815 {
816 struct cx8802_dev *dev;
817
818 dev = pci_get_drvdata(pci_dev);
819
820 dprintk( 1, "%s\n", __func__);
821
822 if (!list_empty(&dev->drvlist)) {
823 struct cx8802_driver *drv, *tmp;
824 int err;
825
826 printk(KERN_WARNING "%s/2: Trying to remove cx8802 driver "
827 "while cx8802 sub-drivers still loaded?!\n",
828 dev->core->name);
829
830 list_for_each_entry_safe(drv, tmp, &dev->drvlist, drvlist) {
831 err = drv->remove(drv);
832 if (err == 0) {
833 mutex_lock(&drv->core->lock);
834 list_del(&drv->drvlist);
835 mutex_unlock(&drv->core->lock);
836 } else
837 printk(KERN_ERR "%s/2: cx8802 driver remove "
838 "failed (%d)\n", dev->core->name, err);
839 kfree(drv);
840 }
841 }
842
843 /* Destroy any 8802 reference. */
844 dev->core->dvbdev = NULL;
845
846 /* common */
847 cx8802_fini_common(dev);
848 cx88_core_put(dev->core,dev->pci);
849 kfree(dev);
850 }
851
852 static struct pci_device_id cx8802_pci_tbl[] = {
853 {
854 .vendor = 0x14f1,
855 .device = 0x8802,
856 .subvendor = PCI_ANY_ID,
857 .subdevice = PCI_ANY_ID,
858 },{
859 /* --- end of list --- */
860 }
861 };
862 MODULE_DEVICE_TABLE(pci, cx8802_pci_tbl);
863
864 static struct pci_driver cx8802_pci_driver = {
865 .name = "cx88-mpeg driver manager",
866 .id_table = cx8802_pci_tbl,
867 .probe = cx8802_probe,
868 .remove = __devexit_p(cx8802_remove),
869 };
870
871 static int __init cx8802_init(void)
872 {
873 printk(KERN_INFO "cx88/2: cx2388x MPEG-TS Driver Manager version %d.%d.%d loaded\n",
874 (CX88_VERSION_CODE >> 16) & 0xff,
875 (CX88_VERSION_CODE >> 8) & 0xff,
876 CX88_VERSION_CODE & 0xff);
877 #ifdef SNAPSHOT
878 printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
879 SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
880 #endif
881 return pci_register_driver(&cx8802_pci_driver);
882 }
883
884 static void __exit cx8802_fini(void)
885 {
886 pci_unregister_driver(&cx8802_pci_driver);
887 }
888
889 module_init(cx8802_init);
890 module_exit(cx8802_fini);
891 EXPORT_SYMBOL(cx8802_buf_prepare);
892 EXPORT_SYMBOL(cx8802_buf_queue);
893 EXPORT_SYMBOL(cx8802_cancel_buffers);
894
895 EXPORT_SYMBOL(cx8802_register_driver);
896 EXPORT_SYMBOL(cx8802_unregister_driver);
897 EXPORT_SYMBOL(cx8802_get_driver);
898 /* ----------------------------------------------------------- */
899 /*
900 * Local variables:
901 * c-basic-offset: 8
902 * End:
903 * 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
904 */
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