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x86: VMI fix
[wrt350n-kernel.git] / drivers / media / video / cx88 / cx88-mpeg.c
blob0aedbeaf94cd7edfacc59c3271e3166f3dd75cb1
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 IO and video signal pins */
122 cx_write(MO_PINMUX_IO, 0x88);
123 cx_write(TS_HW_SOP_CNTRL, (0x47 << 16) | (188 << 4));
124 dev->ts_gen_cntrl = 5;
125 cx_write(TS_SOP_STAT, 0);
126 cx_write(TS_VALERR_CNTRL, 0);
127 udelay(100);
128 break;
129 default:
130 cx_write(TS_SOP_STAT, 0x00);
131 break;
132 }
133 cx_write(TS_GEN_CNTRL, dev->ts_gen_cntrl);
134 udelay(100);
135 } else if ( (core->active_type_id == CX88_MPEG_BLACKBIRD) &&
136 (core->board.mpeg & CX88_MPEG_BLACKBIRD) ) {
137 dprintk( 1, "cx8802_start_dma doing .blackbird\n");
138 cx_write(MO_PINMUX_IO, 0x88); /* enable MPEG parallel IO */
139
140 cx_write(TS_GEN_CNTRL, 0x46); /* punctured clock TS & posedge driven & software reset */
141 udelay(100);
142
143 cx_write(TS_HW_SOP_CNTRL, 0x408); /* mpeg start byte */
144 cx_write(TS_VALERR_CNTRL, 0x2000);
145
146 cx_write(TS_GEN_CNTRL, 0x06); /* punctured clock TS & posedge driven */
147 udelay(100);
148 } else {
149 printk( "%s() Failed. Unsupported value in .mpeg (0x%08x)\n", __FUNCTION__,
150 core->board.mpeg );
151 return -EINVAL;
152 }
153
154 /* reset counter */
155 cx_write(MO_TS_GPCNTRL, GP_COUNT_CONTROL_RESET);
156 q->count = 1;
157
158 /* enable irqs */
159 dprintk( 1, "setting the interrupt mask\n" );
160 cx_set(MO_PCI_INTMSK, core->pci_irqmask | PCI_INT_TSINT);
161 cx_set(MO_TS_INTMSK, 0x1f0011);
162
163 /* start dma */
164 cx_set(MO_DEV_CNTRL2, (1<<5));
165 cx_set(MO_TS_DMACNTRL, 0x11);
166 return 0;
167 }
168
169 static int cx8802_stop_dma(struct cx8802_dev *dev)
170 {
171 struct cx88_core *core = dev->core;
172 dprintk( 1, "cx8802_stop_dma\n" );
173
174 /* stop dma */
175 cx_clear(MO_TS_DMACNTRL, 0x11);
176
177 /* disable irqs */
178 cx_clear(MO_PCI_INTMSK, PCI_INT_TSINT);
179 cx_clear(MO_TS_INTMSK, 0x1f0011);
180
181 /* Reset the controller */
182 cx_write(TS_GEN_CNTRL, 0xcd);
183 return 0;
184 }
185
186 static int cx8802_restart_queue(struct cx8802_dev *dev,
187 struct cx88_dmaqueue *q)
188 {
189 struct cx88_buffer *buf;
190
191 dprintk( 1, "cx8802_restart_queue\n" );
192 if (list_empty(&q->active))
193 {
194 struct cx88_buffer *prev;
195 prev = NULL;
196
197 dprintk(1, "cx8802_restart_queue: queue is empty\n" );
198
199 for (;;) {
200 if (list_empty(&q->queued))
201 return 0;
202 buf = list_entry(q->queued.next, struct cx88_buffer, vb.queue);
203 if (NULL == prev) {
204 list_del(&buf->vb.queue);
205 list_add_tail(&buf->vb.queue,&q->active);
206 cx8802_start_dma(dev, q, buf);
207 buf->vb.state = VIDEOBUF_ACTIVE;
208 buf->count = q->count++;
209 mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
210 dprintk(1,"[%p/%d] restart_queue - first active\n",
211 buf,buf->vb.i);
212
213 } else if (prev->vb.width == buf->vb.width &&
214 prev->vb.height == buf->vb.height &&
215 prev->fmt == buf->fmt) {
216 list_del(&buf->vb.queue);
217 list_add_tail(&buf->vb.queue,&q->active);
218 buf->vb.state = VIDEOBUF_ACTIVE;
219 buf->count = q->count++;
220 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
221 dprintk(1,"[%p/%d] restart_queue - move to active\n",
222 buf,buf->vb.i);
223 } else {
224 return 0;
225 }
226 prev = buf;
227 }
228 return 0;
229 }
230
231 buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
232 dprintk(2,"restart_queue [%p/%d]: restart dma\n",
233 buf, buf->vb.i);
234 cx8802_start_dma(dev, q, buf);
235 list_for_each_entry(buf, &q->active, vb.queue)
236 buf->count = q->count++;
237 mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
238 return 0;
239 }
240
241 /* ------------------------------------------------------------------ */
242
243 int cx8802_buf_prepare(struct videobuf_queue *q, struct cx8802_dev *dev,
244 struct cx88_buffer *buf, enum v4l2_field field)
245 {
246 int size = dev->ts_packet_size * dev->ts_packet_count;
247 struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
248 int rc;
249
250 dprintk(1, "%s: %p\n", __FUNCTION__, buf);
251 if (0 != buf->vb.baddr && buf->vb.bsize < size)
252 return -EINVAL;
253
254 if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
255 buf->vb.width = dev->ts_packet_size;
256 buf->vb.height = dev->ts_packet_count;
257 buf->vb.size = size;
258 buf->vb.field = field /*V4L2_FIELD_TOP*/;
259
260 if (0 != (rc = videobuf_iolock(q,&buf->vb,NULL)))
261 goto fail;
262 cx88_risc_databuffer(dev->pci, &buf->risc,
263 dma->sglist,
264 buf->vb.width, buf->vb.height, 0);
265 }
266 buf->vb.state = VIDEOBUF_PREPARED;
267 return 0;
268
269 fail:
270 cx88_free_buffer(q,buf);
271 return rc;
272 }
273
274 void cx8802_buf_queue(struct cx8802_dev *dev, struct cx88_buffer *buf)
275 {
276 struct cx88_buffer *prev;
277 struct cx88_dmaqueue *cx88q = &dev->mpegq;
278
279 dprintk( 1, "cx8802_buf_queue\n" );
280 /* add jump to stopper */
281 buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
282 buf->risc.jmp[1] = cpu_to_le32(cx88q->stopper.dma);
283
284 if (list_empty(&cx88q->active)) {
285 dprintk( 1, "queue is empty - first active\n" );
286 list_add_tail(&buf->vb.queue,&cx88q->active);
287 cx8802_start_dma(dev, cx88q, buf);
288 buf->vb.state = VIDEOBUF_ACTIVE;
289 buf->count = cx88q->count++;
290 mod_timer(&cx88q->timeout, jiffies+BUFFER_TIMEOUT);
291 dprintk(1,"[%p/%d] %s - first active\n",
292 buf, buf->vb.i, __FUNCTION__);
293
294 } else {
295 dprintk( 1, "queue is not empty - append to active\n" );
296 prev = list_entry(cx88q->active.prev, struct cx88_buffer, vb.queue);
297 list_add_tail(&buf->vb.queue,&cx88q->active);
298 buf->vb.state = VIDEOBUF_ACTIVE;
299 buf->count = cx88q->count++;
300 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
301 dprintk( 1, "[%p/%d] %s - append to active\n",
302 buf, buf->vb.i, __FUNCTION__);
303 }
304 }
305
306 /* ----------------------------------------------------------- */
307
308 static void do_cancel_buffers(struct cx8802_dev *dev, char *reason, int restart)
309 {
310 struct cx88_dmaqueue *q = &dev->mpegq;
311 struct cx88_buffer *buf;
312 unsigned long flags;
313
314 spin_lock_irqsave(&dev->slock,flags);
315 while (!list_empty(&q->active)) {
316 buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
317 list_del(&buf->vb.queue);
318 buf->vb.state = VIDEOBUF_ERROR;
319 wake_up(&buf->vb.done);
320 dprintk(1,"[%p/%d] %s - dma=0x%08lx\n",
321 buf, buf->vb.i, reason, (unsigned long)buf->risc.dma);
322 }
323 if (restart)
324 {
325 dprintk(1, "restarting queue\n" );
326 cx8802_restart_queue(dev,q);
327 }
328 spin_unlock_irqrestore(&dev->slock,flags);
329 }
330
331 void cx8802_cancel_buffers(struct cx8802_dev *dev)
332 {
333 struct cx88_dmaqueue *q = &dev->mpegq;
334
335 dprintk( 1, "cx8802_cancel_buffers" );
336 del_timer_sync(&q->timeout);
337 cx8802_stop_dma(dev);
338 do_cancel_buffers(dev,"cancel",0);
339 }
340
341 static void cx8802_timeout(unsigned long data)
342 {
343 struct cx8802_dev *dev = (struct cx8802_dev*)data;
344
345 dprintk(1, "%s\n",__FUNCTION__);
346
347 if (debug)
348 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
349 cx8802_stop_dma(dev);
350 do_cancel_buffers(dev,"timeout",1);
351 }
352
353 static char *cx88_mpeg_irqs[32] = {
354 "ts_risci1", NULL, NULL, NULL,
355 "ts_risci2", NULL, NULL, NULL,
356 "ts_oflow", NULL, NULL, NULL,
357 "ts_sync", NULL, NULL, NULL,
358 "opc_err", "par_err", "rip_err", "pci_abort",
359 "ts_err?",
360 };
361
362 static void cx8802_mpeg_irq(struct cx8802_dev *dev)
363 {
364 struct cx88_core *core = dev->core;
365 u32 status, mask, count;
366
367 dprintk( 1, "cx8802_mpeg_irq\n" );
368 status = cx_read(MO_TS_INTSTAT);
369 mask = cx_read(MO_TS_INTMSK);
370 if (0 == (status & mask))
371 return;
372
373 cx_write(MO_TS_INTSTAT, status);
374
375 if (debug || (status & mask & ~0xff))
376 cx88_print_irqbits(core->name, "irq mpeg ",
377 cx88_mpeg_irqs, ARRAY_SIZE(cx88_mpeg_irqs),
378 status, mask);
379
380 /* risc op code error */
381 if (status & (1 << 16)) {
382 printk(KERN_WARNING "%s: mpeg risc op code error\n",core->name);
383 cx_clear(MO_TS_DMACNTRL, 0x11);
384 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
385 }
386
387 /* risc1 y */
388 if (status & 0x01) {
389 dprintk( 1, "wake up\n" );
390 spin_lock(&dev->slock);
391 count = cx_read(MO_TS_GPCNT);
392 cx88_wakeup(dev->core, &dev->mpegq, count);
393 spin_unlock(&dev->slock);
394 }
395
396 /* risc2 y */
397 if (status & 0x10) {
398 spin_lock(&dev->slock);
399 cx8802_restart_queue(dev,&dev->mpegq);
400 spin_unlock(&dev->slock);
401 }
402
403 /* other general errors */
404 if (status & 0x1f0100) {
405 dprintk( 0, "general errors: 0x%08x\n", status & 0x1f0100 );
406 spin_lock(&dev->slock);
407 cx8802_stop_dma(dev);
408 cx8802_restart_queue(dev,&dev->mpegq);
409 spin_unlock(&dev->slock);
410 }
411 }
412
413 #define MAX_IRQ_LOOP 10
414
415 static irqreturn_t cx8802_irq(int irq, void *dev_id)
416 {
417 struct cx8802_dev *dev = dev_id;
418 struct cx88_core *core = dev->core;
419 u32 status;
420 int loop, handled = 0;
421
422 for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
423 status = cx_read(MO_PCI_INTSTAT) &
424 (core->pci_irqmask | PCI_INT_TSINT);
425 if (0 == status)
426 goto out;
427 dprintk( 1, "cx8802_irq\n" );
428 dprintk( 1, " loop: %d/%d\n", loop, MAX_IRQ_LOOP );
429 dprintk( 1, " status: %d\n", status );
430 handled = 1;
431 cx_write(MO_PCI_INTSTAT, status);
432
433 if (status & core->pci_irqmask)
434 cx88_core_irq(core,status);
435 if (status & PCI_INT_TSINT)
436 cx8802_mpeg_irq(dev);
437 };
438 if (MAX_IRQ_LOOP == loop) {
439 dprintk( 0, "clearing mask\n" );
440 printk(KERN_WARNING "%s/0: irq loop -- clearing mask\n",
441 core->name);
442 cx_write(MO_PCI_INTMSK,0);
443 }
444
445 out:
446 return IRQ_RETVAL(handled);
447 }
448
449 static int cx8802_init_common(struct cx8802_dev *dev)
450 {
451 struct cx88_core *core = dev->core;
452 int err;
453
454 /* pci init */
455 if (pci_enable_device(dev->pci))
456 return -EIO;
457 pci_set_master(dev->pci);
458 if (!pci_dma_supported(dev->pci,DMA_32BIT_MASK)) {
459 printk("%s/2: Oops: no 32bit PCI DMA ???\n",dev->core->name);
460 return -EIO;
461 }
462
463 pci_read_config_byte(dev->pci, PCI_CLASS_REVISION, &dev->pci_rev);
464 pci_read_config_byte(dev->pci, PCI_LATENCY_TIMER, &dev->pci_lat);
465 printk(KERN_INFO "%s/2: found at %s, rev: %d, irq: %d, "
466 "latency: %d, mmio: 0x%llx\n", dev->core->name,
467 pci_name(dev->pci), dev->pci_rev, dev->pci->irq,
468 dev->pci_lat,(unsigned long long)pci_resource_start(dev->pci,0));
469
470 /* initialize driver struct */
471 spin_lock_init(&dev->slock);
472
473 /* init dma queue */
474 INIT_LIST_HEAD(&dev->mpegq.active);
475 INIT_LIST_HEAD(&dev->mpegq.queued);
476 dev->mpegq.timeout.function = cx8802_timeout;
477 dev->mpegq.timeout.data = (unsigned long)dev;
478 init_timer(&dev->mpegq.timeout);
479 cx88_risc_stopper(dev->pci,&dev->mpegq.stopper,
480 MO_TS_DMACNTRL,0x11,0x00);
481
482 /* get irq */
483 err = request_irq(dev->pci->irq, cx8802_irq,
484 IRQF_SHARED | IRQF_DISABLED, dev->core->name, dev);
485 if (err < 0) {
486 printk(KERN_ERR "%s: can't get IRQ %d\n",
487 dev->core->name, dev->pci->irq);
488 return err;
489 }
490 cx_set(MO_PCI_INTMSK, core->pci_irqmask);
491
492 /* everything worked */
493 pci_set_drvdata(dev->pci,dev);
494 return 0;
495 }
496
497 static void cx8802_fini_common(struct cx8802_dev *dev)
498 {
499 dprintk( 2, "cx8802_fini_common\n" );
500 cx8802_stop_dma(dev);
501 pci_disable_device(dev->pci);
502
503 /* unregister stuff */
504 free_irq(dev->pci->irq, dev);
505 pci_set_drvdata(dev->pci, NULL);
506
507 /* free memory */
508 btcx_riscmem_free(dev->pci,&dev->mpegq.stopper);
509 }
510
511 /* ----------------------------------------------------------- */
512
513 static int cx8802_suspend_common(struct pci_dev *pci_dev, pm_message_t state)
514 {
515 struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
516 struct cx88_core *core = dev->core;
517
518 /* stop mpeg dma */
519 spin_lock(&dev->slock);
520 if (!list_empty(&dev->mpegq.active)) {
521 dprintk( 2, "suspend\n" );
522 printk("%s: suspend mpeg\n", core->name);
523 cx8802_stop_dma(dev);
524 del_timer(&dev->mpegq.timeout);
525 }
526 spin_unlock(&dev->slock);
527
528 /* FIXME -- shutdown device */
529 cx88_shutdown(dev->core);
530
531 pci_save_state(pci_dev);
532 if (0 != pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state))) {
533 pci_disable_device(pci_dev);
534 dev->state.disabled = 1;
535 }
536 return 0;
537 }
538
539 static int cx8802_resume_common(struct pci_dev *pci_dev)
540 {
541 struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
542 struct cx88_core *core = dev->core;
543 int err;
544
545 if (dev->state.disabled) {
546 err=pci_enable_device(pci_dev);
547 if (err) {
548 printk(KERN_ERR "%s: can't enable device\n",
549 dev->core->name);
550 return err;
551 }
552 dev->state.disabled = 0;
553 }
554 err=pci_set_power_state(pci_dev, PCI_D0);
555 if (err) {
556 printk(KERN_ERR "%s: can't enable device\n",
557 dev->core->name);
558 pci_disable_device(pci_dev);
559 dev->state.disabled = 1;
560
561 return err;
562 }
563 pci_restore_state(pci_dev);
564
565 /* FIXME: re-initialize hardware */
566 cx88_reset(dev->core);
567
568 /* restart video+vbi capture */
569 spin_lock(&dev->slock);
570 if (!list_empty(&dev->mpegq.active)) {
571 printk("%s: resume mpeg\n", core->name);
572 cx8802_restart_queue(dev,&dev->mpegq);
573 }
574 spin_unlock(&dev->slock);
575
576 return 0;
577 }
578
579 #if defined(CONFIG_VIDEO_CX88_BLACKBIRD) || \
580 defined(CONFIG_VIDEO_CX88_BLACKBIRD_MODULE)
581 struct cx8802_dev * cx8802_get_device(struct inode *inode)
582 {
583 int minor = iminor(inode);
584 struct cx8802_dev *dev;
585
586 list_for_each_entry(dev, &cx8802_devlist, devlist)
587 if (dev->mpeg_dev && dev->mpeg_dev->minor == minor)
588 return dev;
589
590 return NULL;
591 }
592 EXPORT_SYMBOL(cx8802_get_device);
593 #endif
594
595 struct cx8802_driver * cx8802_get_driver(struct cx8802_dev *dev, enum cx88_board_type btype)
596 {
597 struct cx8802_driver *d;
598
599 list_for_each_entry(d, &dev->drvlist, drvlist)
600 if (d->type_id == btype)
601 return d;
602
603 return NULL;
604 }
605
606 /* Driver asked for hardware access. */
607 static int cx8802_request_acquire(struct cx8802_driver *drv)
608 {
609 struct cx88_core *core = drv->core;
610
611 /* Fail a request for hardware if the device is busy. */
612 if (core->active_type_id != CX88_BOARD_NONE)
613 return -EBUSY;
614
615 if (drv->advise_acquire)
616 {
617 core->active_type_id = drv->type_id;
618 drv->advise_acquire(drv);
619
620 mpeg_dbg(1,"%s() Post acquire GPIO=%x\n", __FUNCTION__, cx_read(MO_GP0_IO));
621 }
622
623 return 0;
624 }
625
626 /* Driver asked to release hardware. */
627 static int cx8802_request_release(struct cx8802_driver *drv)
628 {
629 struct cx88_core *core = drv->core;
630
631 if (drv->advise_release)
632 {
633 drv->advise_release(drv);
634 core->active_type_id = CX88_BOARD_NONE;
635 mpeg_dbg(1,"%s() Post release GPIO=%x\n", __FUNCTION__, cx_read(MO_GP0_IO));
636 }
637
638 return 0;
639 }
640
641 static int cx8802_check_driver(struct cx8802_driver *drv)
642 {
643 if (drv == NULL)
644 return -ENODEV;
645
646 if ((drv->type_id != CX88_MPEG_DVB) &&
647 (drv->type_id != CX88_MPEG_BLACKBIRD))
648 return -EINVAL;
649
650 if ((drv->hw_access != CX8802_DRVCTL_SHARED) &&
651 (drv->hw_access != CX8802_DRVCTL_EXCLUSIVE))
652 return -EINVAL;
653
654 if ((drv->probe == NULL) ||
655 (drv->remove == NULL) ||
656 (drv->advise_acquire == NULL) ||
657 (drv->advise_release == NULL))
658 return -EINVAL;
659
660 return 0;
661 }
662
663 int cx8802_register_driver(struct cx8802_driver *drv)
664 {
665 struct cx8802_dev *dev;
666 struct cx8802_driver *driver;
667 int err, i = 0;
668
669 printk(KERN_INFO
670 "cx88/2: registering cx8802 driver, type: %s access: %s\n",
671 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
672 drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
673
674 if ((err = cx8802_check_driver(drv)) != 0) {
675 printk(KERN_ERR "cx88/2: cx8802_driver is invalid\n");
676 return err;
677 }
678
679 list_for_each_entry(dev, &cx8802_devlist, devlist) {
680 printk(KERN_INFO
681 "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
682 dev->core->name, dev->pci->subsystem_vendor,
683 dev->pci->subsystem_device, dev->core->board.name,
684 dev->core->boardnr);
685
686 /* Bring up a new struct for each driver instance */
687 driver = kzalloc(sizeof(*drv),GFP_KERNEL);
688 if (driver == NULL)
689 return -ENOMEM;
690
691 /* Snapshot of the driver registration data */
692 drv->core = dev->core;
693 drv->suspend = cx8802_suspend_common;
694 drv->resume = cx8802_resume_common;
695 drv->request_acquire = cx8802_request_acquire;
696 drv->request_release = cx8802_request_release;
697 memcpy(driver, drv, sizeof(*driver));
698
699 err = drv->probe(driver);
700 if (err == 0) {
701 i++;
702 mutex_lock(&drv->core->lock);
703 list_add_tail(&driver->drvlist, &dev->drvlist);
704 mutex_unlock(&drv->core->lock);
705 } else {
706 printk(KERN_ERR
707 "%s/2: cx8802 probe failed, err = %d\n",
708 dev->core->name, err);
709 }
710
711 }
712
713 return i ? 0 : -ENODEV;
714 }
715
716 int cx8802_unregister_driver(struct cx8802_driver *drv)
717 {
718 struct cx8802_dev *dev;
719 struct cx8802_driver *d, *dtmp;
720 int err = 0;
721
722 printk(KERN_INFO
723 "cx88/2: unregistering cx8802 driver, type: %s access: %s\n",
724 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
725 drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
726
727 list_for_each_entry(dev, &cx8802_devlist, devlist) {
728 printk(KERN_INFO
729 "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
730 dev->core->name, dev->pci->subsystem_vendor,
731 dev->pci->subsystem_device, dev->core->board.name,
732 dev->core->boardnr);
733
734 list_for_each_entry_safe(d, dtmp, &dev->drvlist, drvlist) {
735 /* only unregister the correct driver type */
736 if (d->type_id != drv->type_id)
737 continue;
738
739 err = d->remove(d);
740 if (err == 0) {
741 mutex_lock(&drv->core->lock);
742 list_del(&d->drvlist);
743 mutex_unlock(&drv->core->lock);
744 kfree(d);
745 } else
746 printk(KERN_ERR "%s/2: cx8802 driver remove "
747 "failed (%d)\n", dev->core->name, err);
748 }
749
750 }
751
752 return err;
753 }
754
755 /* ----------------------------------------------------------- */
756 static int __devinit cx8802_probe(struct pci_dev *pci_dev,
757 const struct pci_device_id *pci_id)
758 {
759 struct cx8802_dev *dev;
760 struct cx88_core *core;
761 int err;
762
763 /* general setup */
764 core = cx88_core_get(pci_dev);
765 if (NULL == core)
766 return -EINVAL;
767
768 printk("%s/2: cx2388x 8802 Driver Manager\n", core->name);
769
770 err = -ENODEV;
771 if (!core->board.mpeg)
772 goto fail_core;
773
774 err = -ENOMEM;
775 dev = kzalloc(sizeof(*dev),GFP_KERNEL);
776 if (NULL == dev)
777 goto fail_core;
778 dev->pci = pci_dev;
779 dev->core = core;
780
781 err = cx8802_init_common(dev);
782 if (err != 0)
783 goto fail_free;
784
785 INIT_LIST_HEAD(&dev->drvlist);
786 list_add_tail(&dev->devlist,&cx8802_devlist);
787
788 /* Maintain a reference so cx88-video can query the 8802 device. */
789 core->dvbdev = dev;
790
791 /* now autoload cx88-dvb or cx88-blackbird */
792 request_modules(dev);
793 return 0;
794
795 fail_free:
796 kfree(dev);
797 fail_core:
798 cx88_core_put(core,pci_dev);
799 return err;
800 }
801
802 static void __devexit cx8802_remove(struct pci_dev *pci_dev)
803 {
804 struct cx8802_dev *dev;
805
806 dev = pci_get_drvdata(pci_dev);
807
808 dprintk( 1, "%s\n", __FUNCTION__);
809
810 if (!list_empty(&dev->drvlist)) {
811 struct cx8802_driver *drv, *tmp;
812 int err;
813
814 printk(KERN_WARNING "%s/2: Trying to remove cx8802 driver "
815 "while cx8802 sub-drivers still loaded?!\n",
816 dev->core->name);
817
818 list_for_each_entry_safe(drv, tmp, &dev->drvlist, drvlist) {
819 err = drv->remove(drv);
820 if (err == 0) {
821 mutex_lock(&drv->core->lock);
822 list_del(&drv->drvlist);
823 mutex_unlock(&drv->core->lock);
824 } else
825 printk(KERN_ERR "%s/2: cx8802 driver remove "
826 "failed (%d)\n", dev->core->name, err);
827 kfree(drv);
828 }
829 }
830
831 /* Destroy any 8802 reference. */
832 dev->core->dvbdev = NULL;
833
834 /* common */
835 cx8802_fini_common(dev);
836 cx88_core_put(dev->core,dev->pci);
837 kfree(dev);
838 }
839
840 static struct pci_device_id cx8802_pci_tbl[] = {
841 {
842 .vendor = 0x14f1,
843 .device = 0x8802,
844 .subvendor = PCI_ANY_ID,
845 .subdevice = PCI_ANY_ID,
846 },{
847 /* --- end of list --- */
848 }
849 };
850 MODULE_DEVICE_TABLE(pci, cx8802_pci_tbl);
851
852 static struct pci_driver cx8802_pci_driver = {
853 .name = "cx88-mpeg driver manager",
854 .id_table = cx8802_pci_tbl,
855 .probe = cx8802_probe,
856 .remove = __devexit_p(cx8802_remove),
857 };
858
859 static int cx8802_init(void)
860 {
861 printk(KERN_INFO "cx88/2: cx2388x MPEG-TS Driver Manager version %d.%d.%d loaded\n",
862 (CX88_VERSION_CODE >> 16) & 0xff,
863 (CX88_VERSION_CODE >> 8) & 0xff,
864 CX88_VERSION_CODE & 0xff);
865 #ifdef SNAPSHOT
866 printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
867 SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
868 #endif
869 return pci_register_driver(&cx8802_pci_driver);
870 }
871
872 static void cx8802_fini(void)
873 {
874 pci_unregister_driver(&cx8802_pci_driver);
875 }
876
877 module_init(cx8802_init);
878 module_exit(cx8802_fini);
879 EXPORT_SYMBOL(cx8802_buf_prepare);
880 EXPORT_SYMBOL(cx8802_buf_queue);
881 EXPORT_SYMBOL(cx8802_cancel_buffers);
882
883 EXPORT_SYMBOL(cx8802_register_driver);
884 EXPORT_SYMBOL(cx8802_unregister_driver);
885 EXPORT_SYMBOL(cx8802_get_driver);
886 /* ----------------------------------------------------------- */
887 /*
888 * Local variables:
889 * c-basic-offset: 8
890 * End:
891 * 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
892 */
WRT350N Kernel Patches