Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
[linux-2.6] / 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/moduleparam.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.8m.com>");
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 = 0;
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 (cx88_boards[dev->core->board].mpeg & CX88_MPEG_DVB)
59                 request_module("cx88-dvb");
60         if (cx88_boards[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", dev->width, dev->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                 (cx88_boards[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->board) {
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                 default:
121                         cx_write(TS_SOP_STAT, 0x00);
122                         break;
123                 }
124                 cx_write(TS_GEN_CNTRL, dev->ts_gen_cntrl);
125                 udelay(100);
126         } else if ( (core->active_type_id == CX88_MPEG_BLACKBIRD) &&
127                 (cx88_boards[core->board].mpeg & CX88_MPEG_BLACKBIRD) ) {
128                 dprintk( 1, "cx8802_start_dma doing .blackbird\n");
129                 cx_write(MO_PINMUX_IO, 0x88); /* enable MPEG parallel IO */
130
131                 cx_write(TS_GEN_CNTRL, 0x46); /* punctured clock TS & posedge driven & software reset */
132                 udelay(100);
133
134                 cx_write(TS_HW_SOP_CNTRL, 0x408); /* mpeg start byte */
135                 cx_write(TS_VALERR_CNTRL, 0x2000);
136
137                 cx_write(TS_GEN_CNTRL, 0x06); /* punctured clock TS & posedge driven */
138                 udelay(100);
139         } else {
140                 printk( "%s() Failed. Unsupported value in .mpeg (0x%08x)\n", __FUNCTION__,
141                         cx88_boards[core->board].mpeg );
142                 return -EINVAL;
143         }
144
145         /* reset counter */
146         cx_write(MO_TS_GPCNTRL, GP_COUNT_CONTROL_RESET);
147         q->count = 1;
148
149         /* enable irqs */
150         dprintk( 1, "setting the interrupt mask\n" );
151         cx_set(MO_PCI_INTMSK, core->pci_irqmask | 0x04);
152         cx_set(MO_TS_INTMSK,  0x1f0011);
153
154         /* start dma */
155         cx_set(MO_DEV_CNTRL2, (1<<5));
156         cx_set(MO_TS_DMACNTRL, 0x11);
157         return 0;
158 }
159
160 static int cx8802_stop_dma(struct cx8802_dev *dev)
161 {
162         struct cx88_core *core = dev->core;
163         dprintk( 1, "cx8802_stop_dma\n" );
164
165         /* stop dma */
166         cx_clear(MO_TS_DMACNTRL, 0x11);
167
168         /* disable irqs */
169         cx_clear(MO_PCI_INTMSK, 0x000004);
170         cx_clear(MO_TS_INTMSK, 0x1f0011);
171
172         /* Reset the controller */
173         cx_write(TS_GEN_CNTRL, 0xcd);
174         return 0;
175 }
176
177 static int cx8802_restart_queue(struct cx8802_dev    *dev,
178                                 struct cx88_dmaqueue *q)
179 {
180         struct cx88_buffer *buf;
181         struct list_head *item;
182
183        dprintk( 1, "cx8802_restart_queue\n" );
184         if (list_empty(&q->active))
185         {
186                struct cx88_buffer *prev;
187                prev = NULL;
188
189                dprintk(1, "cx8802_restart_queue: queue is empty\n" );
190
191                for (;;) {
192                        if (list_empty(&q->queued))
193                                return 0;
194                        buf = list_entry(q->queued.next, struct cx88_buffer, vb.queue);
195                        if (NULL == prev) {
196                                list_del(&buf->vb.queue);
197                                list_add_tail(&buf->vb.queue,&q->active);
198                                cx8802_start_dma(dev, q, buf);
199                                buf->vb.state = STATE_ACTIVE;
200                                buf->count    = q->count++;
201                                mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
202                                dprintk(1,"[%p/%d] restart_queue - first active\n",
203                                        buf,buf->vb.i);
204
205                        } else if (prev->vb.width  == buf->vb.width  &&
206                                   prev->vb.height == buf->vb.height &&
207                                   prev->fmt       == buf->fmt) {
208                                list_del(&buf->vb.queue);
209                                list_add_tail(&buf->vb.queue,&q->active);
210                                buf->vb.state = STATE_ACTIVE;
211                                buf->count    = q->count++;
212                                prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
213                                dprintk(1,"[%p/%d] restart_queue - move to active\n",
214                                        buf,buf->vb.i);
215                        } else {
216                                return 0;
217                        }
218                        prev = buf;
219                }
220                 return 0;
221         }
222
223         buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
224         dprintk(2,"restart_queue [%p/%d]: restart dma\n",
225                 buf, buf->vb.i);
226         cx8802_start_dma(dev, q, buf);
227         list_for_each(item,&q->active) {
228                 buf = list_entry(item, struct cx88_buffer, vb.queue);
229                 buf->count = q->count++;
230         }
231         mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
232         return 0;
233 }
234
235 /* ------------------------------------------------------------------ */
236
237 int cx8802_buf_prepare(struct videobuf_queue *q, struct cx8802_dev *dev,
238                         struct cx88_buffer *buf, enum v4l2_field field)
239 {
240         int size = dev->ts_packet_size * dev->ts_packet_count;
241         int rc;
242
243         dprintk(1, "%s: %p\n", __FUNCTION__, buf);
244         if (0 != buf->vb.baddr  &&  buf->vb.bsize < size)
245                 return -EINVAL;
246
247         if (STATE_NEEDS_INIT == buf->vb.state) {
248                 buf->vb.width  = dev->ts_packet_size;
249                 buf->vb.height = dev->ts_packet_count;
250                 buf->vb.size   = size;
251                 buf->vb.field  = field /*V4L2_FIELD_TOP*/;
252
253                 if (0 != (rc = videobuf_iolock(q,&buf->vb,NULL)))
254                         goto fail;
255                 cx88_risc_databuffer(dev->pci, &buf->risc,
256                                      buf->vb.dma.sglist,
257                                      buf->vb.width, buf->vb.height);
258         }
259         buf->vb.state = STATE_PREPARED;
260         return 0;
261
262  fail:
263         cx88_free_buffer(q,buf);
264         return rc;
265 }
266
267 void cx8802_buf_queue(struct cx8802_dev *dev, struct cx88_buffer *buf)
268 {
269         struct cx88_buffer    *prev;
270         struct cx88_dmaqueue  *cx88q = &dev->mpegq;
271
272         dprintk( 1, "cx8802_buf_queue\n" );
273         /* add jump to stopper */
274         buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
275         buf->risc.jmp[1] = cpu_to_le32(cx88q->stopper.dma);
276
277         if (list_empty(&cx88q->active)) {
278                 dprintk( 1, "queue is empty - first active\n" );
279                 list_add_tail(&buf->vb.queue,&cx88q->active);
280                 cx8802_start_dma(dev, cx88q, buf);
281                 buf->vb.state = STATE_ACTIVE;
282                 buf->count    = cx88q->count++;
283                 mod_timer(&cx88q->timeout, jiffies+BUFFER_TIMEOUT);
284                 dprintk(1,"[%p/%d] %s - first active\n",
285                         buf, buf->vb.i, __FUNCTION__);
286
287         } else {
288                 dprintk( 1, "queue is not empty - append to active\n" );
289                 prev = list_entry(cx88q->active.prev, struct cx88_buffer, vb.queue);
290                 list_add_tail(&buf->vb.queue,&cx88q->active);
291                 buf->vb.state = STATE_ACTIVE;
292                 buf->count    = cx88q->count++;
293                 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
294                 dprintk( 1, "[%p/%d] %s - append to active\n",
295                         buf, buf->vb.i, __FUNCTION__);
296         }
297 }
298
299 /* ----------------------------------------------------------- */
300
301 static void do_cancel_buffers(struct cx8802_dev *dev, char *reason, int restart)
302 {
303         struct cx88_dmaqueue *q = &dev->mpegq;
304         struct cx88_buffer *buf;
305         unsigned long flags;
306
307         spin_lock_irqsave(&dev->slock,flags);
308         while (!list_empty(&q->active)) {
309                 buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
310                 list_del(&buf->vb.queue);
311                 buf->vb.state = STATE_ERROR;
312                 wake_up(&buf->vb.done);
313                 dprintk(1,"[%p/%d] %s - dma=0x%08lx\n",
314                         buf, buf->vb.i, reason, (unsigned long)buf->risc.dma);
315         }
316         if (restart)
317         {
318                 dprintk(1, "restarting queue\n" );
319                 cx8802_restart_queue(dev,q);
320         }
321         spin_unlock_irqrestore(&dev->slock,flags);
322 }
323
324 void cx8802_cancel_buffers(struct cx8802_dev *dev)
325 {
326         struct cx88_dmaqueue *q = &dev->mpegq;
327
328         dprintk( 1, "cx8802_cancel_buffers" );
329         del_timer_sync(&q->timeout);
330         cx8802_stop_dma(dev);
331         do_cancel_buffers(dev,"cancel",0);
332 }
333
334 static void cx8802_timeout(unsigned long data)
335 {
336         struct cx8802_dev *dev = (struct cx8802_dev*)data;
337
338         dprintk(0, "%s\n",__FUNCTION__);
339
340         if (debug)
341                 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
342         cx8802_stop_dma(dev);
343         do_cancel_buffers(dev,"timeout",1);
344 }
345
346 static char *cx88_mpeg_irqs[32] = {
347         "ts_risci1", NULL, NULL, NULL,
348         "ts_risci2", NULL, NULL, NULL,
349         "ts_oflow",  NULL, NULL, NULL,
350         "ts_sync",   NULL, NULL, NULL,
351         "opc_err", "par_err", "rip_err", "pci_abort",
352         "ts_err?",
353 };
354
355 static void cx8802_mpeg_irq(struct cx8802_dev *dev)
356 {
357         struct cx88_core *core = dev->core;
358         u32 status, mask, count;
359
360         dprintk( 1, "cx8802_mpeg_irq\n" );
361         status = cx_read(MO_TS_INTSTAT);
362         mask   = cx_read(MO_TS_INTMSK);
363         if (0 == (status & mask))
364                 return;
365
366         cx_write(MO_TS_INTSTAT, status);
367
368         if (debug || (status & mask & ~0xff))
369                 cx88_print_irqbits(core->name, "irq mpeg ",
370                                    cx88_mpeg_irqs, ARRAY_SIZE(cx88_mpeg_irqs),
371                                    status, mask);
372
373         /* risc op code error */
374         if (status & (1 << 16)) {
375                 printk(KERN_WARNING "%s: mpeg risc op code error\n",core->name);
376                 cx_clear(MO_TS_DMACNTRL, 0x11);
377                 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
378         }
379
380         /* risc1 y */
381         if (status & 0x01) {
382                 dprintk( 1, "wake up\n" );
383                 spin_lock(&dev->slock);
384                 count = cx_read(MO_TS_GPCNT);
385                 cx88_wakeup(dev->core, &dev->mpegq, count);
386                 spin_unlock(&dev->slock);
387         }
388
389         /* risc2 y */
390         if (status & 0x10) {
391                 spin_lock(&dev->slock);
392                 cx8802_restart_queue(dev,&dev->mpegq);
393                 spin_unlock(&dev->slock);
394         }
395
396         /* other general errors */
397         if (status & 0x1f0100) {
398                 dprintk( 0, "general errors: 0x%08x\n", status & 0x1f0100 );
399                 spin_lock(&dev->slock);
400                 cx8802_stop_dma(dev);
401                 cx8802_restart_queue(dev,&dev->mpegq);
402                 spin_unlock(&dev->slock);
403         }
404 }
405
406 #define MAX_IRQ_LOOP 10
407
408 static irqreturn_t cx8802_irq(int irq, void *dev_id)
409 {
410         struct cx8802_dev *dev = dev_id;
411         struct cx88_core *core = dev->core;
412         u32 status;
413         int loop, handled = 0;
414
415         for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
416                 status = cx_read(MO_PCI_INTSTAT) & (core->pci_irqmask | 0x04);
417                 if (0 == status)
418                         goto out;
419                 dprintk( 1, "cx8802_irq\n" );
420                 dprintk( 1, "    loop: %d/%d\n", loop, MAX_IRQ_LOOP );
421                 dprintk( 1, "    status: %d\n", status );
422                 handled = 1;
423                 cx_write(MO_PCI_INTSTAT, status);
424
425                 if (status & core->pci_irqmask)
426                         cx88_core_irq(core,status);
427                 if (status & 0x04)
428                         cx8802_mpeg_irq(dev);
429         };
430         if (MAX_IRQ_LOOP == loop) {
431                 dprintk( 0, "clearing mask\n" );
432                 printk(KERN_WARNING "%s/0: irq loop -- clearing mask\n",
433                        core->name);
434                 cx_write(MO_PCI_INTMSK,0);
435         }
436
437  out:
438         return IRQ_RETVAL(handled);
439 }
440
441 /* ----------------------------------------------------------- */
442 /* exported stuff                                              */
443
444 int cx8802_init_common(struct cx8802_dev *dev)
445 {
446         struct cx88_core *core = dev->core;
447         int err;
448
449         /* pci init */
450         if (pci_enable_device(dev->pci))
451                 return -EIO;
452         pci_set_master(dev->pci);
453         if (!pci_dma_supported(dev->pci,DMA_32BIT_MASK)) {
454                 printk("%s/2: Oops: no 32bit PCI DMA ???\n",dev->core->name);
455                 return -EIO;
456         }
457
458         pci_read_config_byte(dev->pci, PCI_CLASS_REVISION, &dev->pci_rev);
459         pci_read_config_byte(dev->pci, PCI_LATENCY_TIMER,  &dev->pci_lat);
460         printk(KERN_INFO "%s/2: found at %s, rev: %d, irq: %d, "
461                "latency: %d, mmio: 0x%llx\n", dev->core->name,
462                pci_name(dev->pci), dev->pci_rev, dev->pci->irq,
463                dev->pci_lat,(unsigned long long)pci_resource_start(dev->pci,0));
464
465         /* initialize driver struct */
466         spin_lock_init(&dev->slock);
467
468         /* init dma queue */
469         INIT_LIST_HEAD(&dev->mpegq.active);
470         INIT_LIST_HEAD(&dev->mpegq.queued);
471         dev->mpegq.timeout.function = cx8802_timeout;
472         dev->mpegq.timeout.data     = (unsigned long)dev;
473         init_timer(&dev->mpegq.timeout);
474         cx88_risc_stopper(dev->pci,&dev->mpegq.stopper,
475                           MO_TS_DMACNTRL,0x11,0x00);
476
477         /* get irq */
478         err = request_irq(dev->pci->irq, cx8802_irq,
479                           IRQF_SHARED | IRQF_DISABLED, dev->core->name, dev);
480         if (err < 0) {
481                 printk(KERN_ERR "%s: can't get IRQ %d\n",
482                        dev->core->name, dev->pci->irq);
483                 return err;
484         }
485         cx_set(MO_PCI_INTMSK, core->pci_irqmask);
486
487         /* everything worked */
488         pci_set_drvdata(dev->pci,dev);
489         return 0;
490 }
491
492 void cx8802_fini_common(struct cx8802_dev *dev)
493 {
494         dprintk( 2, "cx8802_fini_common\n" );
495         cx8802_stop_dma(dev);
496         pci_disable_device(dev->pci);
497
498         /* unregister stuff */
499         free_irq(dev->pci->irq, dev);
500         pci_set_drvdata(dev->pci, NULL);
501
502         /* free memory */
503         btcx_riscmem_free(dev->pci,&dev->mpegq.stopper);
504 }
505
506 /* ----------------------------------------------------------- */
507
508 int cx8802_suspend_common(struct pci_dev *pci_dev, pm_message_t state)
509 {
510         struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
511         struct cx88_core *core = dev->core;
512
513         /* stop mpeg dma */
514         spin_lock(&dev->slock);
515         if (!list_empty(&dev->mpegq.active)) {
516                 dprintk( 2, "suspend\n" );
517                 printk("%s: suspend mpeg\n", core->name);
518                 cx8802_stop_dma(dev);
519                 del_timer(&dev->mpegq.timeout);
520         }
521         spin_unlock(&dev->slock);
522
523         /* FIXME -- shutdown device */
524         cx88_shutdown(dev->core);
525
526         pci_save_state(pci_dev);
527         if (0 != pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state))) {
528                 pci_disable_device(pci_dev);
529                 dev->state.disabled = 1;
530         }
531         return 0;
532 }
533
534 int cx8802_resume_common(struct pci_dev *pci_dev)
535 {
536         struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
537         struct cx88_core *core = dev->core;
538         int err;
539
540         if (dev->state.disabled) {
541                 err=pci_enable_device(pci_dev);
542                 if (err) {
543                         printk(KERN_ERR "%s: can't enable device\n",
544                                                dev->core->name);
545                         return err;
546                 }
547                 dev->state.disabled = 0;
548         }
549         err=pci_set_power_state(pci_dev, PCI_D0);
550         if (err) {
551                 printk(KERN_ERR "%s: can't enable device\n",
552                                                dev->core->name);
553                 pci_disable_device(pci_dev);
554                 dev->state.disabled = 1;
555
556                 return err;
557         }
558         pci_restore_state(pci_dev);
559
560         /* FIXME: re-initialize hardware */
561         cx88_reset(dev->core);
562
563         /* restart video+vbi capture */
564         spin_lock(&dev->slock);
565         if (!list_empty(&dev->mpegq.active)) {
566                 printk("%s: resume mpeg\n", core->name);
567                 cx8802_restart_queue(dev,&dev->mpegq);
568         }
569         spin_unlock(&dev->slock);
570
571         return 0;
572 }
573
574 struct cx8802_dev * cx8802_get_device(struct inode *inode)
575 {
576         int minor = iminor(inode);
577         struct cx8802_dev *h = NULL;
578         struct list_head *list;
579
580         list_for_each(list,&cx8802_devlist) {
581                 h = list_entry(list, struct cx8802_dev, devlist);
582                 if (h->mpeg_dev->minor == minor)
583                         return h;
584         }
585
586         return NULL;
587 }
588
589 struct cx8802_driver * cx8802_get_driver(struct cx8802_dev *dev, enum cx88_board_type btype)
590 {
591         struct cx8802_dev *h = NULL;
592         struct cx8802_driver *d = NULL;
593         struct list_head *list;
594         struct list_head *list2;
595
596         list_for_each(list,&cx8802_devlist) {
597                 h = list_entry(list, struct cx8802_dev, devlist);
598                 if (h != dev)
599                         continue;
600
601                 list_for_each(list2, &h->drvlist.devlist) {
602                         d = list_entry(list2, struct cx8802_driver, devlist);
603
604                         /* only unregister the correct driver type */
605                         if (d->type_id == btype) {
606                                 return d;
607                         }
608                 }
609         }
610
611         return NULL;
612 }
613
614 /* Driver asked for hardware access. */
615 int cx8802_request_acquire(struct cx8802_driver *drv)
616 {
617         struct cx88_core *core = drv->core;
618
619         /* Fail a request for hardware if the device is busy. */
620         if (core->active_type_id != CX88_BOARD_NONE)
621                 return -EBUSY;
622
623         if (drv->advise_acquire)
624         {
625                 core->active_type_id = drv->type_id;
626                 drv->advise_acquire(drv);
627
628                 mpeg_dbg(1,"%s() Post acquire GPIO=%x\n", __FUNCTION__, cx_read(MO_GP0_IO));
629         }
630
631         return 0;
632 }
633
634 /* Driver asked to release hardware. */
635 int cx8802_request_release(struct cx8802_driver *drv)
636 {
637         struct cx88_core *core = drv->core;
638
639         if (drv->advise_release)
640         {
641                 drv->advise_release(drv);
642                 core->active_type_id = CX88_BOARD_NONE;
643                 mpeg_dbg(1,"%s() Post release GPIO=%x\n", __FUNCTION__, cx_read(MO_GP0_IO));
644         }
645
646         return 0;
647 }
648
649 static int cx8802_check_driver(struct cx8802_driver *drv)
650 {
651         if (drv == NULL)
652                 return -ENODEV;
653
654         if ((drv->type_id != CX88_MPEG_DVB) &&
655                 (drv->type_id != CX88_MPEG_BLACKBIRD))
656                 return -EINVAL;
657
658         if ((drv->hw_access != CX8802_DRVCTL_SHARED) &&
659                 (drv->hw_access != CX8802_DRVCTL_EXCLUSIVE))
660                 return -EINVAL;
661
662         if ((drv->probe == NULL) ||
663                 (drv->remove == NULL) ||
664                 (drv->advise_acquire == NULL) ||
665                 (drv->advise_release == NULL))
666                 return -EINVAL;
667
668         return 0;
669 }
670
671 int cx8802_register_driver(struct cx8802_driver *drv)
672 {
673         struct cx8802_dev *h;
674         struct cx8802_driver *driver;
675         struct list_head *list;
676         int err = 0, i = 0;
677
678         printk(KERN_INFO "%s() ->registering driver type=%s access=%s\n", __FUNCTION__ ,
679                 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
680                 drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
681
682         if ((err = cx8802_check_driver(drv)) != 0) {
683                 printk(KERN_INFO "%s() cx8802_driver is invalid\n", __FUNCTION__ );
684                 return err;
685         }
686
687         list_for_each(list,&cx8802_devlist) {
688                 h = list_entry(list, struct cx8802_dev, devlist);
689
690                 printk(KERN_INFO "CORE %s: subsystem: %04x:%04x, board: %s [card=%d]\n",
691                         h->core->name,h->pci->subsystem_vendor,
692                         h->pci->subsystem_device,cx88_boards[h->core->board].name,
693                         h->core->board);
694
695                 /* Bring up a new struct for each driver instance */
696                 driver = kzalloc(sizeof(*drv),GFP_KERNEL);
697                 if (driver == NULL)
698                         return -ENOMEM;
699
700                 /* Snapshot of the driver registration data */
701                 drv->core = h->core;
702                 drv->suspend = cx8802_suspend_common;
703                 drv->resume = cx8802_resume_common;
704                 drv->request_acquire = cx8802_request_acquire;
705                 drv->request_release = cx8802_request_release;
706                 memcpy(driver, drv, sizeof(*driver));
707
708                 err = drv->probe(driver);
709                 if (err == 0) {
710                         i++;
711                         mutex_lock(&drv->core->lock);
712                         list_add_tail(&driver->devlist,&h->drvlist.devlist);
713                         mutex_unlock(&drv->core->lock);
714                 } else {
715                         printk(KERN_ERR "%s() ->probe failed err = %d\n", __FUNCTION__, err);
716                 }
717
718         }
719         if (i == 0)
720                 err = -ENODEV;
721         else
722                 err = 0;
723
724         return err;
725 }
726
727 int cx8802_unregister_driver(struct cx8802_driver *drv)
728 {
729         struct cx8802_dev *h;
730         struct cx8802_driver *d;
731         struct list_head *list;
732         struct list_head *list2, *q;
733         int err = 0, i = 0;
734
735         printk(KERN_INFO "%s() ->unregistering driver type=%s\n", __FUNCTION__ ,
736                 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird");
737
738         list_for_each(list,&cx8802_devlist) {
739                 i++;
740                 h = list_entry(list, struct cx8802_dev, devlist);
741
742                 printk(KERN_INFO "CORE %s: subsystem: %04x:%04x, board: %s [card=%d]\n",
743                         h->core->name,h->pci->subsystem_vendor,
744                         h->pci->subsystem_device,cx88_boards[h->core->board].name,
745                         h->core->board);
746
747                 list_for_each_safe(list2, q, &h->drvlist.devlist) {
748                         d = list_entry(list2, struct cx8802_driver, devlist);
749
750                         /* only unregister the correct driver type */
751                         if (d->type_id != drv->type_id)
752                                 continue;
753
754                         err = d->remove(d);
755                         if (err == 0) {
756                                 mutex_lock(&drv->core->lock);
757                                 list_del(list2);
758                                 mutex_unlock(&drv->core->lock);
759                         } else
760                                 printk(KERN_ERR "%s() ->remove failed err = %d\n", __FUNCTION__, err);
761
762                 }
763
764         }
765
766         return err;
767 }
768
769 /* ----------------------------------------------------------- */
770 static int __devinit cx8802_probe(struct pci_dev *pci_dev,
771                                const struct pci_device_id *pci_id)
772 {
773         struct cx8802_dev *dev;
774         struct cx88_core  *core;
775         int err;
776
777         /* general setup */
778         core = cx88_core_get(pci_dev);
779         if (NULL == core)
780                 return -EINVAL;
781
782         printk("%s/2: cx2388x 8802 Driver Manager\n", core->name);
783
784         err = -ENODEV;
785         if (!cx88_boards[core->board].mpeg)
786                 goto fail_core;
787
788         err = -ENOMEM;
789         dev = kzalloc(sizeof(*dev),GFP_KERNEL);
790         if (NULL == dev)
791                 goto fail_core;
792         dev->pci = pci_dev;
793         dev->core = core;
794
795         err = cx8802_init_common(dev);
796         if (err != 0)
797                 goto fail_free;
798
799         INIT_LIST_HEAD(&dev->drvlist.devlist);
800         list_add_tail(&dev->devlist,&cx8802_devlist);
801
802         /* Maintain a reference so cx88-video can query the 8802 device. */
803         core->dvbdev = dev;
804
805         /* now autoload cx88-dvb or cx88-blackbird */
806         request_modules(dev);
807         return 0;
808
809  fail_free:
810         kfree(dev);
811  fail_core:
812         cx88_core_put(core,pci_dev);
813         return err;
814 }
815
816 static void __devexit cx8802_remove(struct pci_dev *pci_dev)
817 {
818         struct cx8802_dev *dev;
819         struct cx8802_driver *h;
820         struct list_head *list;
821
822         dev = pci_get_drvdata(pci_dev);
823
824         dprintk( 1, "%s\n", __FUNCTION__);
825
826         list_for_each(list,&dev->drvlist.devlist) {
827                 h = list_entry(list, struct cx8802_driver, devlist);
828                 dprintk( 1, " ->driver\n");
829                 if (h->remove == NULL) {
830                         printk(KERN_ERR "%s .. skipping driver, no probe function\n", __FUNCTION__);
831                         continue;
832                 }
833                 printk(KERN_INFO "%s .. Removing driver type %d\n", __FUNCTION__, h->type_id);
834                 cx8802_unregister_driver(h);
835                 list_del(&dev->drvlist.devlist);
836         }
837
838         /* Destroy any 8802 reference. */
839         dev->core->dvbdev = NULL;
840
841         /* common */
842         cx8802_fini_common(dev);
843         cx88_core_put(dev->core,dev->pci);
844         kfree(dev);
845 }
846
847 static struct pci_device_id cx8802_pci_tbl[] = {
848         {
849                 .vendor       = 0x14f1,
850                 .device       = 0x8802,
851                 .subvendor    = PCI_ANY_ID,
852                 .subdevice    = PCI_ANY_ID,
853         },{
854                 /* --- end of list --- */
855         }
856 };
857 MODULE_DEVICE_TABLE(pci, cx8802_pci_tbl);
858
859 static struct pci_driver cx8802_pci_driver = {
860         .name     = "cx88-mpeg driver manager",
861         .id_table = cx8802_pci_tbl,
862         .probe    = cx8802_probe,
863         .remove   = __devexit_p(cx8802_remove),
864 };
865
866 static int cx8802_init(void)
867 {
868         printk(KERN_INFO "cx2388x cx88-mpeg Driver Manager version %d.%d.%d loaded\n",
869                (CX88_VERSION_CODE >> 16) & 0xff,
870                (CX88_VERSION_CODE >>  8) & 0xff,
871                CX88_VERSION_CODE & 0xff);
872 #ifdef SNAPSHOT
873         printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
874                SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
875 #endif
876         return pci_register_driver(&cx8802_pci_driver);
877 }
878
879 static void cx8802_fini(void)
880 {
881         pci_unregister_driver(&cx8802_pci_driver);
882 }
883
884 module_init(cx8802_init);
885 module_exit(cx8802_fini);
886 EXPORT_SYMBOL(cx8802_buf_prepare);
887 EXPORT_SYMBOL(cx8802_buf_queue);
888 EXPORT_SYMBOL(cx8802_cancel_buffers);
889
890 EXPORT_SYMBOL(cx8802_init_common);
891 EXPORT_SYMBOL(cx8802_fini_common);
892
893 EXPORT_SYMBOL(cx8802_register_driver);
894 EXPORT_SYMBOL(cx8802_unregister_driver);
895 EXPORT_SYMBOL(cx8802_get_device);
896 EXPORT_SYMBOL(cx8802_get_driver);
897 /* ----------------------------------------------------------- */
898 /*
899  * Local variables:
900  * c-basic-offset: 8
901  * End:
902  * 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
903  */