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Linux 2.6.34-rc3
[pohmelfs.git] / drivers / media / video / cx88 / cx88-mpeg.c
blob338af77f7f01f2df2ff8dc9c4f9efb214e616365
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/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.us>");
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;
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_SAMSUNG_SMT_7020:
114 cx_write(TS_SOP_STAT, 0x00);
115 break;
116 case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
117 case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
118 cx_write(MO_PINMUX_IO, 0x88); /* Enable MPEG parallel IO and video signal pins */
119 udelay(100);
120 break;
121 case CX88_BOARD_HAUPPAUGE_HVR1300:
122 /* Enable MPEG parallel IO and video signal pins */
123 cx_write(MO_PINMUX_IO, 0x88);
124 cx_write(TS_SOP_STAT, 0);
125 cx_write(TS_VALERR_CNTRL, 0);
126 break;
127 case CX88_BOARD_PINNACLE_PCTV_HD_800i:
128 /* Enable MPEG parallel IO and video signal pins */
129 cx_write(MO_PINMUX_IO, 0x88);
130 cx_write(TS_HW_SOP_CNTRL, (0x47 << 16) | (188 << 4));
131 dev->ts_gen_cntrl = 5;
132 cx_write(TS_SOP_STAT, 0);
133 cx_write(TS_VALERR_CNTRL, 0);
134 udelay(100);
135 break;
136 default:
137 cx_write(TS_SOP_STAT, 0x00);
138 break;
139 }
140 cx_write(TS_GEN_CNTRL, dev->ts_gen_cntrl);
141 udelay(100);
142 } else if ( (core->active_type_id == CX88_MPEG_BLACKBIRD) &&
143 (core->board.mpeg & CX88_MPEG_BLACKBIRD) ) {
144 dprintk( 1, "cx8802_start_dma doing .blackbird\n");
145 cx_write(MO_PINMUX_IO, 0x88); /* enable MPEG parallel IO */
146
147 cx_write(TS_GEN_CNTRL, 0x46); /* punctured clock TS & posedge driven & software reset */
148 udelay(100);
149
150 cx_write(TS_HW_SOP_CNTRL, 0x408); /* mpeg start byte */
151 cx_write(TS_VALERR_CNTRL, 0x2000);
152
153 cx_write(TS_GEN_CNTRL, 0x06); /* punctured clock TS & posedge driven */
154 udelay(100);
155 } else {
156 printk( "%s() Failed. Unsupported value in .mpeg (0x%08x)\n", __func__,
157 core->board.mpeg );
158 return -EINVAL;
159 }
160
161 /* reset counter */
162 cx_write(MO_TS_GPCNTRL, GP_COUNT_CONTROL_RESET);
163 q->count = 1;
164
165 /* enable irqs */
166 dprintk( 1, "setting the interrupt mask\n" );
167 cx_set(MO_PCI_INTMSK, core->pci_irqmask | PCI_INT_TSINT);
168 cx_set(MO_TS_INTMSK, 0x1f0011);
169
170 /* start dma */
171 cx_set(MO_DEV_CNTRL2, (1<<5));
172 cx_set(MO_TS_DMACNTRL, 0x11);
173 return 0;
174 }
175
176 static int cx8802_stop_dma(struct cx8802_dev *dev)
177 {
178 struct cx88_core *core = dev->core;
179 dprintk( 1, "cx8802_stop_dma\n" );
180
181 /* stop dma */
182 cx_clear(MO_TS_DMACNTRL, 0x11);
183
184 /* disable irqs */
185 cx_clear(MO_PCI_INTMSK, PCI_INT_TSINT);
186 cx_clear(MO_TS_INTMSK, 0x1f0011);
187
188 /* Reset the controller */
189 cx_write(TS_GEN_CNTRL, 0xcd);
190 return 0;
191 }
192
193 static int cx8802_restart_queue(struct cx8802_dev *dev,
194 struct cx88_dmaqueue *q)
195 {
196 struct cx88_buffer *buf;
197
198 dprintk( 1, "cx8802_restart_queue\n" );
199 if (list_empty(&q->active))
200 {
201 struct cx88_buffer *prev;
202 prev = NULL;
203
204 dprintk(1, "cx8802_restart_queue: queue is empty\n" );
205
206 for (;;) {
207 if (list_empty(&q->queued))
208 return 0;
209 buf = list_entry(q->queued.next, struct cx88_buffer, vb.queue);
210 if (NULL == prev) {
211 list_del(&buf->vb.queue);
212 list_add_tail(&buf->vb.queue,&q->active);
213 cx8802_start_dma(dev, q, buf);
214 buf->vb.state = VIDEOBUF_ACTIVE;
215 buf->count = q->count++;
216 mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
217 dprintk(1,"[%p/%d] restart_queue - first active\n",
218 buf,buf->vb.i);
219
220 } else if (prev->vb.width == buf->vb.width &&
221 prev->vb.height == buf->vb.height &&
222 prev->fmt == buf->fmt) {
223 list_del(&buf->vb.queue);
224 list_add_tail(&buf->vb.queue,&q->active);
225 buf->vb.state = VIDEOBUF_ACTIVE;
226 buf->count = q->count++;
227 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
228 dprintk(1,"[%p/%d] restart_queue - move to active\n",
229 buf,buf->vb.i);
230 } else {
231 return 0;
232 }
233 prev = buf;
234 }
235 return 0;
236 }
237
238 buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
239 dprintk(2,"restart_queue [%p/%d]: restart dma\n",
240 buf, buf->vb.i);
241 cx8802_start_dma(dev, q, buf);
242 list_for_each_entry(buf, &q->active, vb.queue)
243 buf->count = q->count++;
244 mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
245 return 0;
246 }
247
248 /* ------------------------------------------------------------------ */
249
250 int cx8802_buf_prepare(struct videobuf_queue *q, struct cx8802_dev *dev,
251 struct cx88_buffer *buf, enum v4l2_field field)
252 {
253 int size = dev->ts_packet_size * dev->ts_packet_count;
254 struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
255 int rc;
256
257 dprintk(1, "%s: %p\n", __func__, buf);
258 if (0 != buf->vb.baddr && buf->vb.bsize < size)
259 return -EINVAL;
260
261 if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
262 buf->vb.width = dev->ts_packet_size;
263 buf->vb.height = dev->ts_packet_count;
264 buf->vb.size = size;
265 buf->vb.field = field /*V4L2_FIELD_TOP*/;
266
267 if (0 != (rc = videobuf_iolock(q,&buf->vb,NULL)))
268 goto fail;
269 cx88_risc_databuffer(dev->pci, &buf->risc,
270 dma->sglist,
271 buf->vb.width, buf->vb.height, 0);
272 }
273 buf->vb.state = VIDEOBUF_PREPARED;
274 return 0;
275
276 fail:
277 cx88_free_buffer(q,buf);
278 return rc;
279 }
280
281 void cx8802_buf_queue(struct cx8802_dev *dev, struct cx88_buffer *buf)
282 {
283 struct cx88_buffer *prev;
284 struct cx88_dmaqueue *cx88q = &dev->mpegq;
285
286 dprintk( 1, "cx8802_buf_queue\n" );
287 /* add jump to stopper */
288 buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
289 buf->risc.jmp[1] = cpu_to_le32(cx88q->stopper.dma);
290
291 if (list_empty(&cx88q->active)) {
292 dprintk( 1, "queue is empty - first active\n" );
293 list_add_tail(&buf->vb.queue,&cx88q->active);
294 cx8802_start_dma(dev, cx88q, buf);
295 buf->vb.state = VIDEOBUF_ACTIVE;
296 buf->count = cx88q->count++;
297 mod_timer(&cx88q->timeout, jiffies+BUFFER_TIMEOUT);
298 dprintk(1,"[%p/%d] %s - first active\n",
299 buf, buf->vb.i, __func__);
300
301 } else {
302 dprintk( 1, "queue is not empty - append to active\n" );
303 prev = list_entry(cx88q->active.prev, struct cx88_buffer, vb.queue);
304 list_add_tail(&buf->vb.queue,&cx88q->active);
305 buf->vb.state = VIDEOBUF_ACTIVE;
306 buf->count = cx88q->count++;
307 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
308 dprintk( 1, "[%p/%d] %s - append to active\n",
309 buf, buf->vb.i, __func__);
310 }
311 }
312
313 /* ----------------------------------------------------------- */
314
315 static void do_cancel_buffers(struct cx8802_dev *dev, char *reason, int restart)
316 {
317 struct cx88_dmaqueue *q = &dev->mpegq;
318 struct cx88_buffer *buf;
319 unsigned long flags;
320
321 spin_lock_irqsave(&dev->slock,flags);
322 while (!list_empty(&q->active)) {
323 buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
324 list_del(&buf->vb.queue);
325 buf->vb.state = VIDEOBUF_ERROR;
326 wake_up(&buf->vb.done);
327 dprintk(1,"[%p/%d] %s - dma=0x%08lx\n",
328 buf, buf->vb.i, reason, (unsigned long)buf->risc.dma);
329 }
330 if (restart)
331 {
332 dprintk(1, "restarting queue\n" );
333 cx8802_restart_queue(dev,q);
334 }
335 spin_unlock_irqrestore(&dev->slock,flags);
336 }
337
338 void cx8802_cancel_buffers(struct cx8802_dev *dev)
339 {
340 struct cx88_dmaqueue *q = &dev->mpegq;
341
342 dprintk( 1, "cx8802_cancel_buffers" );
343 del_timer_sync(&q->timeout);
344 cx8802_stop_dma(dev);
345 do_cancel_buffers(dev,"cancel",0);
346 }
347
348 static void cx8802_timeout(unsigned long data)
349 {
350 struct cx8802_dev *dev = (struct cx8802_dev*)data;
351
352 dprintk(1, "%s\n",__func__);
353
354 if (debug)
355 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
356 cx8802_stop_dma(dev);
357 do_cancel_buffers(dev,"timeout",1);
358 }
359
360 static char *cx88_mpeg_irqs[32] = {
361 "ts_risci1", NULL, NULL, NULL,
362 "ts_risci2", NULL, NULL, NULL,
363 "ts_oflow", NULL, NULL, NULL,
364 "ts_sync", NULL, NULL, NULL,
365 "opc_err", "par_err", "rip_err", "pci_abort",
366 "ts_err?",
367 };
368
369 static void cx8802_mpeg_irq(struct cx8802_dev *dev)
370 {
371 struct cx88_core *core = dev->core;
372 u32 status, mask, count;
373
374 dprintk( 1, "cx8802_mpeg_irq\n" );
375 status = cx_read(MO_TS_INTSTAT);
376 mask = cx_read(MO_TS_INTMSK);
377 if (0 == (status & mask))
378 return;
379
380 cx_write(MO_TS_INTSTAT, status);
381
382 if (debug || (status & mask & ~0xff))
383 cx88_print_irqbits(core->name, "irq mpeg ",
384 cx88_mpeg_irqs, ARRAY_SIZE(cx88_mpeg_irqs),
385 status, mask);
386
387 /* risc op code error */
388 if (status & (1 << 16)) {
389 printk(KERN_WARNING "%s: mpeg risc op code error\n",core->name);
390 cx_clear(MO_TS_DMACNTRL, 0x11);
391 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
392 }
393
394 /* risc1 y */
395 if (status & 0x01) {
396 dprintk( 1, "wake up\n" );
397 spin_lock(&dev->slock);
398 count = cx_read(MO_TS_GPCNT);
399 cx88_wakeup(dev->core, &dev->mpegq, count);
400 spin_unlock(&dev->slock);
401 }
402
403 /* risc2 y */
404 if (status & 0x10) {
405 spin_lock(&dev->slock);
406 cx8802_restart_queue(dev,&dev->mpegq);
407 spin_unlock(&dev->slock);
408 }
409
410 /* other general errors */
411 if (status & 0x1f0100) {
412 dprintk( 0, "general errors: 0x%08x\n", status & 0x1f0100 );
413 spin_lock(&dev->slock);
414 cx8802_stop_dma(dev);
415 cx8802_restart_queue(dev,&dev->mpegq);
416 spin_unlock(&dev->slock);
417 }
418 }
419
420 #define MAX_IRQ_LOOP 10
421
422 static irqreturn_t cx8802_irq(int irq, void *dev_id)
423 {
424 struct cx8802_dev *dev = dev_id;
425 struct cx88_core *core = dev->core;
426 u32 status;
427 int loop, handled = 0;
428
429 for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
430 status = cx_read(MO_PCI_INTSTAT) &
431 (core->pci_irqmask | PCI_INT_TSINT);
432 if (0 == status)
433 goto out;
434 dprintk( 1, "cx8802_irq\n" );
435 dprintk( 1, " loop: %d/%d\n", loop, MAX_IRQ_LOOP );
436 dprintk( 1, " status: %d\n", status );
437 handled = 1;
438 cx_write(MO_PCI_INTSTAT, status);
439
440 if (status & core->pci_irqmask)
441 cx88_core_irq(core,status);
442 if (status & PCI_INT_TSINT)
443 cx8802_mpeg_irq(dev);
444 };
445 if (MAX_IRQ_LOOP == loop) {
446 dprintk( 0, "clearing mask\n" );
447 printk(KERN_WARNING "%s/0: irq loop -- clearing mask\n",
448 core->name);
449 cx_write(MO_PCI_INTMSK,0);
450 }
451
452 out:
453 return IRQ_RETVAL(handled);
454 }
455
456 static int cx8802_init_common(struct cx8802_dev *dev)
457 {
458 struct cx88_core *core = dev->core;
459 int err;
460
461 /* pci init */
462 if (pci_enable_device(dev->pci))
463 return -EIO;
464 pci_set_master(dev->pci);
465 if (!pci_dma_supported(dev->pci,DMA_BIT_MASK(32))) {
466 printk("%s/2: Oops: no 32bit PCI DMA ???\n",dev->core->name);
467 return -EIO;
468 }
469
470 pci_read_config_byte(dev->pci, PCI_CLASS_REVISION, &dev->pci_rev);
471 pci_read_config_byte(dev->pci, PCI_LATENCY_TIMER, &dev->pci_lat);
472 printk(KERN_INFO "%s/2: found at %s, rev: %d, irq: %d, "
473 "latency: %d, mmio: 0x%llx\n", dev->core->name,
474 pci_name(dev->pci), dev->pci_rev, dev->pci->irq,
475 dev->pci_lat,(unsigned long long)pci_resource_start(dev->pci,0));
476
477 /* initialize driver struct */
478 spin_lock_init(&dev->slock);
479
480 /* init dma queue */
481 INIT_LIST_HEAD(&dev->mpegq.active);
482 INIT_LIST_HEAD(&dev->mpegq.queued);
483 dev->mpegq.timeout.function = cx8802_timeout;
484 dev->mpegq.timeout.data = (unsigned long)dev;
485 init_timer(&dev->mpegq.timeout);
486 cx88_risc_stopper(dev->pci,&dev->mpegq.stopper,
487 MO_TS_DMACNTRL,0x11,0x00);
488
489 /* get irq */
490 err = request_irq(dev->pci->irq, cx8802_irq,
491 IRQF_SHARED | IRQF_DISABLED, dev->core->name, dev);
492 if (err < 0) {
493 printk(KERN_ERR "%s: can't get IRQ %d\n",
494 dev->core->name, dev->pci->irq);
495 return err;
496 }
497 cx_set(MO_PCI_INTMSK, core->pci_irqmask);
498
499 /* everything worked */
500 pci_set_drvdata(dev->pci,dev);
501 return 0;
502 }
503
504 static void cx8802_fini_common(struct cx8802_dev *dev)
505 {
506 dprintk( 2, "cx8802_fini_common\n" );
507 cx8802_stop_dma(dev);
508 pci_disable_device(dev->pci);
509
510 /* unregister stuff */
511 free_irq(dev->pci->irq, dev);
512 pci_set_drvdata(dev->pci, NULL);
513
514 /* free memory */
515 btcx_riscmem_free(dev->pci,&dev->mpegq.stopper);
516 }
517
518 /* ----------------------------------------------------------- */
519
520 static int cx8802_suspend_common(struct pci_dev *pci_dev, pm_message_t state)
521 {
522 struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
523 struct cx88_core *core = dev->core;
524
525 /* stop mpeg dma */
526 spin_lock(&dev->slock);
527 if (!list_empty(&dev->mpegq.active)) {
528 dprintk( 2, "suspend\n" );
529 printk("%s: suspend mpeg\n", core->name);
530 cx8802_stop_dma(dev);
531 del_timer(&dev->mpegq.timeout);
532 }
533 spin_unlock(&dev->slock);
534
535 /* FIXME -- shutdown device */
536 cx88_shutdown(dev->core);
537
538 pci_save_state(pci_dev);
539 if (0 != pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state))) {
540 pci_disable_device(pci_dev);
541 dev->state.disabled = 1;
542 }
543 return 0;
544 }
545
546 static int cx8802_resume_common(struct pci_dev *pci_dev)
547 {
548 struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
549 struct cx88_core *core = dev->core;
550 int err;
551
552 if (dev->state.disabled) {
553 err=pci_enable_device(pci_dev);
554 if (err) {
555 printk(KERN_ERR "%s: can't enable device\n",
556 dev->core->name);
557 return err;
558 }
559 dev->state.disabled = 0;
560 }
561 err=pci_set_power_state(pci_dev, PCI_D0);
562 if (err) {
563 printk(KERN_ERR "%s: can't enable device\n",
564 dev->core->name);
565 pci_disable_device(pci_dev);
566 dev->state.disabled = 1;
567
568 return err;
569 }
570 pci_restore_state(pci_dev);
571
572 /* FIXME: re-initialize hardware */
573 cx88_reset(dev->core);
574
575 /* restart video+vbi capture */
576 spin_lock(&dev->slock);
577 if (!list_empty(&dev->mpegq.active)) {
578 printk("%s: resume mpeg\n", core->name);
579 cx8802_restart_queue(dev,&dev->mpegq);
580 }
581 spin_unlock(&dev->slock);
582
583 return 0;
584 }
585
586 struct cx8802_driver * cx8802_get_driver(struct cx8802_dev *dev, enum cx88_board_type btype)
587 {
588 struct cx8802_driver *d;
589
590 list_for_each_entry(d, &dev->drvlist, drvlist)
591 if (d->type_id == btype)
592 return d;
593
594 return NULL;
595 }
596
597 /* Driver asked for hardware access. */
598 static int cx8802_request_acquire(struct cx8802_driver *drv)
599 {
600 struct cx88_core *core = drv->core;
601
602 /* Fail a request for hardware if the device is busy. */
603 if (core->active_type_id != CX88_BOARD_NONE &&
604 core->active_type_id != drv->type_id)
605 return -EBUSY;
606
607 core->input = CX88_VMUX_DVB;
608
609 if (drv->advise_acquire)
610 {
611 mutex_lock(&drv->core->lock);
612 core->active_ref++;
613 if (core->active_type_id == CX88_BOARD_NONE) {
614 core->active_type_id = drv->type_id;
615 drv->advise_acquire(drv);
616 }
617 mutex_unlock(&drv->core->lock);
618
619 mpeg_dbg(1,"%s() Post acquire GPIO=%x\n", __func__, cx_read(MO_GP0_IO));
620 }
621
622 return 0;
623 }
624
625 /* Driver asked to release hardware. */
626 static int cx8802_request_release(struct cx8802_driver *drv)
627 {
628 struct cx88_core *core = drv->core;
629
630 mutex_lock(&drv->core->lock);
631 if (drv->advise_release && --core->active_ref == 0)
632 {
633 drv->advise_release(drv);
634 core->active_type_id = CX88_BOARD_NONE;
635 mpeg_dbg(1,"%s() Post release GPIO=%x\n", __func__, cx_read(MO_GP0_IO));
636 }
637 mutex_unlock(&drv->core->lock);
638
639 return 0;
640 }
641
642 static int cx8802_check_driver(struct cx8802_driver *drv)
643 {
644 if (drv == NULL)
645 return -ENODEV;
646
647 if ((drv->type_id != CX88_MPEG_DVB) &&
648 (drv->type_id != CX88_MPEG_BLACKBIRD))
649 return -EINVAL;
650
651 if ((drv->hw_access != CX8802_DRVCTL_SHARED) &&
652 (drv->hw_access != CX8802_DRVCTL_EXCLUSIVE))
653 return -EINVAL;
654
655 if ((drv->probe == NULL) ||
656 (drv->remove == NULL) ||
657 (drv->advise_acquire == NULL) ||
658 (drv->advise_release == NULL))
659 return -EINVAL;
660
661 return 0;
662 }
663
664 int cx8802_register_driver(struct cx8802_driver *drv)
665 {
666 struct cx8802_dev *dev;
667 struct cx8802_driver *driver;
668 int err, i = 0;
669
670 printk(KERN_INFO
671 "cx88/2: registering cx8802 driver, type: %s access: %s\n",
672 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
673 drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
674
675 if ((err = cx8802_check_driver(drv)) != 0) {
676 printk(KERN_ERR "cx88/2: cx8802_driver is invalid\n");
677 return err;
678 }
679
680 list_for_each_entry(dev, &cx8802_devlist, devlist) {
681 printk(KERN_INFO
682 "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
683 dev->core->name, dev->pci->subsystem_vendor,
684 dev->pci->subsystem_device, dev->core->board.name,
685 dev->core->boardnr);
686
687 /* Bring up a new struct for each driver instance */
688 driver = kzalloc(sizeof(*drv),GFP_KERNEL);
689 if (driver == NULL)
690 return -ENOMEM;
691
692 /* Snapshot of the driver registration data */
693 drv->core = dev->core;
694 drv->suspend = cx8802_suspend_common;
695 drv->resume = cx8802_resume_common;
696 drv->request_acquire = cx8802_request_acquire;
697 drv->request_release = cx8802_request_release;
698 memcpy(driver, drv, sizeof(*driver));
699
700 err = drv->probe(driver);
701 if (err == 0) {
702 i++;
703 mutex_lock(&drv->core->lock);
704 list_add_tail(&driver->drvlist, &dev->drvlist);
705 mutex_unlock(&drv->core->lock);
706 } else {
707 printk(KERN_ERR
708 "%s/2: cx8802 probe failed, err = %d\n",
709 dev->core->name, err);
710 }
711
712 }
713
714 return i ? 0 : -ENODEV;
715 }
716
717 int cx8802_unregister_driver(struct cx8802_driver *drv)
718 {
719 struct cx8802_dev *dev;
720 struct cx8802_driver *d, *dtmp;
721 int err = 0;
722
723 printk(KERN_INFO
724 "cx88/2: unregistering cx8802 driver, type: %s access: %s\n",
725 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
726 drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
727
728 list_for_each_entry(dev, &cx8802_devlist, devlist) {
729 printk(KERN_INFO
730 "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
731 dev->core->name, dev->pci->subsystem_vendor,
732 dev->pci->subsystem_device, dev->core->board.name,
733 dev->core->boardnr);
734
735 list_for_each_entry_safe(d, dtmp, &dev->drvlist, drvlist) {
736 /* only unregister the correct driver type */
737 if (d->type_id != drv->type_id)
738 continue;
739
740 err = d->remove(d);
741 if (err == 0) {
742 mutex_lock(&drv->core->lock);
743 list_del(&d->drvlist);
744 mutex_unlock(&drv->core->lock);
745 kfree(d);
746 } else
747 printk(KERN_ERR "%s/2: cx8802 driver remove "
748 "failed (%d)\n", dev->core->name, err);
749 }
750
751 }
752
753 return err;
754 }
755
756 /* ----------------------------------------------------------- */
757 static int __devinit cx8802_probe(struct pci_dev *pci_dev,
758 const struct pci_device_id *pci_id)
759 {
760 struct cx8802_dev *dev;
761 struct cx88_core *core;
762 int err;
763
764 /* general setup */
765 core = cx88_core_get(pci_dev);
766 if (NULL == core)
767 return -EINVAL;
768
769 printk("%s/2: cx2388x 8802 Driver Manager\n", core->name);
770
771 err = -ENODEV;
772 if (!core->board.mpeg)
773 goto fail_core;
774
775 err = -ENOMEM;
776 dev = kzalloc(sizeof(*dev),GFP_KERNEL);
777 if (NULL == dev)
778 goto fail_core;
779 dev->pci = pci_dev;
780 dev->core = core;
781
782 /* Maintain a reference so cx88-video can query the 8802 device. */
783 core->dvbdev = dev;
784
785 err = cx8802_init_common(dev);
786 if (err != 0)
787 goto fail_free;
788
789 INIT_LIST_HEAD(&dev->drvlist);
790 list_add_tail(&dev->devlist,&cx8802_devlist);
791
792 /* now autoload cx88-dvb or cx88-blackbird */
793 request_modules(dev);
794 return 0;
795
796 fail_free:
797 kfree(dev);
798 fail_core:
799 core->dvbdev = NULL;
800 cx88_core_put(core,pci_dev);
801 return err;
802 }
803
804 static void __devexit cx8802_remove(struct pci_dev *pci_dev)
805 {
806 struct cx8802_dev *dev;
807
808 dev = pci_get_drvdata(pci_dev);
809
810 dprintk( 1, "%s\n", __func__);
811
812 if (!list_empty(&dev->drvlist)) {
813 struct cx8802_driver *drv, *tmp;
814 int err;
815
816 printk(KERN_WARNING "%s/2: Trying to remove cx8802 driver "
817 "while cx8802 sub-drivers still loaded?!\n",
818 dev->core->name);
819
820 list_for_each_entry_safe(drv, tmp, &dev->drvlist, drvlist) {
821 err = drv->remove(drv);
822 if (err == 0) {
823 mutex_lock(&drv->core->lock);
824 list_del(&drv->drvlist);
825 mutex_unlock(&drv->core->lock);
826 } else
827 printk(KERN_ERR "%s/2: cx8802 driver remove "
828 "failed (%d)\n", dev->core->name, err);
829 kfree(drv);
830 }
831 }
832
833 /* Destroy any 8802 reference. */
834 dev->core->dvbdev = NULL;
835
836 /* common */
837 cx8802_fini_common(dev);
838 cx88_core_put(dev->core,dev->pci);
839 kfree(dev);
840 }
841
842 static struct pci_device_id cx8802_pci_tbl[] = {
843 {
844 .vendor = 0x14f1,
845 .device = 0x8802,
846 .subvendor = PCI_ANY_ID,
847 .subdevice = PCI_ANY_ID,
848 },{
849 /* --- end of list --- */
850 }
851 };
852 MODULE_DEVICE_TABLE(pci, cx8802_pci_tbl);
853
854 static struct pci_driver cx8802_pci_driver = {
855 .name = "cx88-mpeg driver manager",
856 .id_table = cx8802_pci_tbl,
857 .probe = cx8802_probe,
858 .remove = __devexit_p(cx8802_remove),
859 };
860
861 static int __init cx8802_init(void)
862 {
863 printk(KERN_INFO "cx88/2: cx2388x MPEG-TS Driver Manager version %d.%d.%d loaded\n",
864 (CX88_VERSION_CODE >> 16) & 0xff,
865 (CX88_VERSION_CODE >> 8) & 0xff,
866 CX88_VERSION_CODE & 0xff);
867 #ifdef SNAPSHOT
868 printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
869 SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
870 #endif
871 return pci_register_driver(&cx8802_pci_driver);
872 }
873
874 static void __exit cx8802_fini(void)
875 {
876 pci_unregister_driver(&cx8802_pci_driver);
877 }
878
879 module_init(cx8802_init);
880 module_exit(cx8802_fini);
881 EXPORT_SYMBOL(cx8802_buf_prepare);
882 EXPORT_SYMBOL(cx8802_buf_queue);
883 EXPORT_SYMBOL(cx8802_cancel_buffers);
884
885 EXPORT_SYMBOL(cx8802_register_driver);
886 EXPORT_SYMBOL(cx8802_unregister_driver);
887 EXPORT_SYMBOL(cx8802_get_driver);
888 /* ----------------------------------------------------------- */
889 /*
890 * Local variables:
891 * c-basic-offset: 8
892 * End:
893 * 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
894 */