V4L/DVB (9222): S2API: Add Multiple-frontend on a single adapter support.
[linux-2.6.git] / drivers / media / video / cx88 / cx88-mpeg.c
1 /*
2  *
3  *  Support for the mpeg transport stream transfers
4  *  PCI function #2 of the cx2388x.
5  *
6  *    (c) 2004 Jelle Foks <jelle@foks.8m.com>
7  *    (c) 2004 Chris Pascoe <c.pascoe@itee.uq.edu.au>
8  *    (c) 2004 Gerd Knorr <kraxel@bytesex.org>
9  *
10  *  This program is free software; you can redistribute it and/or modify
11  *  it under the terms of the GNU General Public License as published by
12  *  the Free Software Foundation; either version 2 of the License, or
13  *  (at your option) any later version.
14  *
15  *  This program is distributed in the hope that it will be useful,
16  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
17  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18  *  GNU General Public License for more details.
19  *
20  *  You should have received a copy of the GNU General Public License
21  *  along with this program; if not, write to the Free Software
22  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23  */
24
25 #include <linux/module.h>
26 #include <linux/init.h>
27 #include <linux/device.h>
28 #include <linux/dma-mapping.h>
29 #include <linux/interrupt.h>
30 #include <asm/delay.h>
31
32 #include "cx88.h"
33
34 /* ------------------------------------------------------------------ */
35
36 MODULE_DESCRIPTION("mpeg driver for cx2388x based TV cards");
37 MODULE_AUTHOR("Jelle Foks <jelle@foks.8m.com>");
38 MODULE_AUTHOR("Chris Pascoe <c.pascoe@itee.uq.edu.au>");
39 MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
40 MODULE_LICENSE("GPL");
41
42 static unsigned int debug;
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", __func__,
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", __func__, 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, __func__);
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, __func__);
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",__func__);
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             core->active_type_id != drv->type_id)
614                 return -EBUSY;
615
616         core->input = CX88_VMUX_DVB;
617
618         if (drv->advise_acquire)
619         {
620                 mutex_lock(&drv->core->lock);
621                 core->active_ref++;
622                 if (core->active_type_id == CX88_BOARD_NONE) {
623                         core->active_type_id = drv->type_id;
624                         drv->advise_acquire(drv);
625                 }
626                 mutex_unlock(&drv->core->lock);
627
628                 mpeg_dbg(1,"%s() Post acquire GPIO=%x\n", __func__, 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         mutex_lock(&drv->core->lock);
640         if (drv->advise_release && --core->active_ref == 0)
641         {
642                 drv->advise_release(drv);
643                 core->active_type_id = CX88_BOARD_NONE;
644                 mpeg_dbg(1,"%s() Post release GPIO=%x\n", __func__, cx_read(MO_GP0_IO));
645         }
646         mutex_unlock(&drv->core->lock);
647
648         return 0;
649 }
650
651 static int cx8802_check_driver(struct cx8802_driver *drv)
652 {
653         if (drv == NULL)
654                 return -ENODEV;
655
656         if ((drv->type_id != CX88_MPEG_DVB) &&
657                 (drv->type_id != CX88_MPEG_BLACKBIRD))
658                 return -EINVAL;
659
660         if ((drv->hw_access != CX8802_DRVCTL_SHARED) &&
661                 (drv->hw_access != CX8802_DRVCTL_EXCLUSIVE))
662                 return -EINVAL;
663
664         if ((drv->probe == NULL) ||
665                 (drv->remove == NULL) ||
666                 (drv->advise_acquire == NULL) ||
667                 (drv->advise_release == NULL))
668                 return -EINVAL;
669
670         return 0;
671 }
672
673 int cx8802_register_driver(struct cx8802_driver *drv)
674 {
675         struct cx8802_dev *dev;
676         struct cx8802_driver *driver;
677         int err, i = 0;
678
679         printk(KERN_INFO
680                "cx88/2: registering cx8802 driver, type: %s access: %s\n",
681                drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
682                drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
683
684         if ((err = cx8802_check_driver(drv)) != 0) {
685                 printk(KERN_ERR "cx88/2: cx8802_driver is invalid\n");
686                 return err;
687         }
688
689         list_for_each_entry(dev, &cx8802_devlist, devlist) {
690                 printk(KERN_INFO
691                        "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
692                        dev->core->name, dev->pci->subsystem_vendor,
693                        dev->pci->subsystem_device, dev->core->board.name,
694                        dev->core->boardnr);
695
696                 /* Bring up a new struct for each driver instance */
697                 driver = kzalloc(sizeof(*drv),GFP_KERNEL);
698                 if (driver == NULL)
699                         return -ENOMEM;
700
701                 /* Snapshot of the driver registration data */
702                 drv->core = dev->core;
703                 drv->suspend = cx8802_suspend_common;
704                 drv->resume = cx8802_resume_common;
705                 drv->request_acquire = cx8802_request_acquire;
706                 drv->request_release = cx8802_request_release;
707                 memcpy(driver, drv, sizeof(*driver));
708
709                 err = drv->probe(driver);
710                 if (err == 0) {
711                         i++;
712                         mutex_lock(&drv->core->lock);
713                         list_add_tail(&driver->drvlist, &dev->drvlist);
714                         mutex_unlock(&drv->core->lock);
715                 } else {
716                         printk(KERN_ERR
717                                "%s/2: cx8802 probe failed, err = %d\n",
718                                dev->core->name, err);
719                 }
720
721         }
722
723         return i ? 0 : -ENODEV;
724 }
725
726 int cx8802_unregister_driver(struct cx8802_driver *drv)
727 {
728         struct cx8802_dev *dev;
729         struct cx8802_driver *d, *dtmp;
730         int err = 0;
731
732         printk(KERN_INFO
733                "cx88/2: unregistering cx8802 driver, type: %s access: %s\n",
734                drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
735                drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
736
737         list_for_each_entry(dev, &cx8802_devlist, devlist) {
738                 printk(KERN_INFO
739                        "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
740                        dev->core->name, dev->pci->subsystem_vendor,
741                        dev->pci->subsystem_device, dev->core->board.name,
742                        dev->core->boardnr);
743
744                 list_for_each_entry_safe(d, dtmp, &dev->drvlist, drvlist) {
745                         /* only unregister the correct driver type */
746                         if (d->type_id != drv->type_id)
747                                 continue;
748
749                         err = d->remove(d);
750                         if (err == 0) {
751                                 mutex_lock(&drv->core->lock);
752                                 list_del(&d->drvlist);
753                                 mutex_unlock(&drv->core->lock);
754                                 kfree(d);
755                         } else
756                                 printk(KERN_ERR "%s/2: cx8802 driver remove "
757                                        "failed (%d)\n", dev->core->name, err);
758                 }
759
760         }
761
762         return err;
763 }
764
765 /* ----------------------------------------------------------- */
766 static int __devinit cx8802_probe(struct pci_dev *pci_dev,
767                                const struct pci_device_id *pci_id)
768 {
769         struct cx8802_dev *dev;
770         struct cx88_core  *core;
771         struct videobuf_dvb_frontend *demod;
772         int err,i;
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         if (!core->board.num_frontends) {
786                 printk(KERN_ERR "%s() .num_frontends should be non-zero, err = %d\n", __FUNCTION__, err);
787                 goto fail_core;
788         }
789
790         err = -ENOMEM;
791         dev = kzalloc(sizeof(*dev),GFP_KERNEL);
792         if (NULL == dev)
793                 goto fail_core;
794         dev->pci = pci_dev;
795         dev->core = core;
796
797         err = cx8802_init_common(dev);
798         if (err != 0)
799                 goto fail_free;
800
801         INIT_LIST_HEAD(&dev->drvlist);
802         list_add_tail(&dev->devlist,&cx8802_devlist);
803
804         mutex_init(&dev->frontends.lock);
805         INIT_LIST_HEAD(&dev->frontends.frontend.felist);
806
807         printk(KERN_INFO "%s() allocating %d frontend(s)\n", __FUNCTION__, core->board.num_frontends);
808
809         for (i = 1; i <= core->board.num_frontends; i++) {
810                 demod = videobuf_dvb_alloc_frontend(dev, &dev->frontends, i);
811                 if(demod == NULL) {
812                         printk(KERN_ERR "%s() failed to alloc\n", __FUNCTION__);
813                         err = -ENOMEM;
814                         goto fail_free;
815                 }
816         }
817
818         /* Maintain a reference so cx88-video can query the 8802 device. */
819         core->dvbdev = dev;
820
821         /* now autoload cx88-dvb or cx88-blackbird */
822         request_modules(dev);
823         return 0;
824
825  fail_free:
826         kfree(dev);
827  fail_core:
828         cx88_core_put(core,pci_dev);
829         return err;
830 }
831
832 static void __devexit cx8802_remove(struct pci_dev *pci_dev)
833 {
834         struct cx8802_dev *dev;
835
836         dev = pci_get_drvdata(pci_dev);
837
838         dprintk( 1, "%s\n", __func__);
839
840         if (!list_empty(&dev->drvlist)) {
841                 struct cx8802_driver *drv, *tmp;
842                 int err;
843
844                 printk(KERN_WARNING "%s/2: Trying to remove cx8802 driver "
845                        "while cx8802 sub-drivers still loaded?!\n",
846                        dev->core->name);
847
848                 list_for_each_entry_safe(drv, tmp, &dev->drvlist, drvlist) {
849                         err = drv->remove(drv);
850                         if (err == 0) {
851                                 mutex_lock(&drv->core->lock);
852                                 list_del(&drv->drvlist);
853                                 mutex_unlock(&drv->core->lock);
854                         } else
855                                 printk(KERN_ERR "%s/2: cx8802 driver remove "
856                                        "failed (%d)\n", dev->core->name, err);
857                         kfree(drv);
858                 }
859         }
860
861         /* Destroy any 8802 reference. */
862         dev->core->dvbdev = NULL;
863
864         /* common */
865         cx8802_fini_common(dev);
866         cx88_core_put(dev->core,dev->pci);
867         kfree(dev);
868 }
869
870 static struct pci_device_id cx8802_pci_tbl[] = {
871         {
872                 .vendor       = 0x14f1,
873                 .device       = 0x8802,
874                 .subvendor    = PCI_ANY_ID,
875                 .subdevice    = PCI_ANY_ID,
876         },{
877                 /* --- end of list --- */
878         }
879 };
880 MODULE_DEVICE_TABLE(pci, cx8802_pci_tbl);
881
882 static struct pci_driver cx8802_pci_driver = {
883         .name     = "cx88-mpeg driver manager",
884         .id_table = cx8802_pci_tbl,
885         .probe    = cx8802_probe,
886         .remove   = __devexit_p(cx8802_remove),
887 };
888
889 static int cx8802_init(void)
890 {
891         printk(KERN_INFO "cx88/2: cx2388x MPEG-TS Driver Manager version %d.%d.%d loaded\n",
892                (CX88_VERSION_CODE >> 16) & 0xff,
893                (CX88_VERSION_CODE >>  8) & 0xff,
894                CX88_VERSION_CODE & 0xff);
895 #ifdef SNAPSHOT
896         printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
897                SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
898 #endif
899         return pci_register_driver(&cx8802_pci_driver);
900 }
901
902 static void cx8802_fini(void)
903 {
904         pci_unregister_driver(&cx8802_pci_driver);
905 }
906
907 module_init(cx8802_init);
908 module_exit(cx8802_fini);
909 EXPORT_SYMBOL(cx8802_buf_prepare);
910 EXPORT_SYMBOL(cx8802_buf_queue);
911 EXPORT_SYMBOL(cx8802_cancel_buffers);
912
913 EXPORT_SYMBOL(cx8802_register_driver);
914 EXPORT_SYMBOL(cx8802_unregister_driver);
915 EXPORT_SYMBOL(cx8802_get_driver);
916 /* ----------------------------------------------------------- */
917 /*
918  * Local variables:
919  * c-basic-offset: 8
920  * End:
921  * 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
922  */