Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/usb-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/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 (cx88_boards[dev->core->board].mpeg & CX88_MPEG_DVB)
58                 request_module("cx88-dvb");
59         if (cx88_boards[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", dev->width, dev->height, buf->vb.field);
83
84         /* setup fifo + format */
85         cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH28],
86                                 dev->ts_packet_size, buf->risc.dma);
87
88         /* write TS length to chip */
89         cx_write(MO_TS_LNGTH, buf->vb.width);
90
91         /* FIXME: this needs a review.
92          * also: move to cx88-blackbird + cx88-dvb source files? */
93
94         dprintk( 1, "core->active_type_id = 0x%08x\n", core->active_type_id);
95
96         if ( (core->active_type_id == CX88_MPEG_DVB) &&
97                 (cx88_boards[core->board].mpeg & CX88_MPEG_DVB) ) {
98
99                 dprintk( 1, "cx8802_start_dma doing .dvb\n");
100                 /* negedge driven & software reset */
101                 cx_write(TS_GEN_CNTRL, 0x0040 | dev->ts_gen_cntrl);
102                 udelay(100);
103                 cx_write(MO_PINMUX_IO, 0x00);
104                 cx_write(TS_HW_SOP_CNTRL,0x47<<16|188<<4|0x01);
105                 switch (core->board) {
106                 case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_Q:
107                 case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_T:
108                 case CX88_BOARD_DVICO_FUSIONHDTV_5_GOLD:
109                 case CX88_BOARD_PCHDTV_HD5500:
110                         cx_write(TS_SOP_STAT, 1<<13);
111                         break;
112                 case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
113                 case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
114                         cx_write(MO_PINMUX_IO, 0x88); /* Enable MPEG parallel IO and video signal pins */
115                         udelay(100);
116                         break;
117                 case CX88_BOARD_HAUPPAUGE_HVR1300:
118                         break;
119                 default:
120                         cx_write(TS_SOP_STAT, 0x00);
121                         break;
122                 }
123                 cx_write(TS_GEN_CNTRL, dev->ts_gen_cntrl);
124                 udelay(100);
125         } else if ( (core->active_type_id == CX88_MPEG_BLACKBIRD) &&
126                 (cx88_boards[core->board].mpeg & CX88_MPEG_BLACKBIRD) ) {
127                 dprintk( 1, "cx8802_start_dma doing .blackbird\n");
128                 cx_write(MO_PINMUX_IO, 0x88); /* enable MPEG parallel IO */
129
130                 cx_write(TS_GEN_CNTRL, 0x46); /* punctured clock TS & posedge driven & software reset */
131                 udelay(100);
132
133                 cx_write(TS_HW_SOP_CNTRL, 0x408); /* mpeg start byte */
134                 cx_write(TS_VALERR_CNTRL, 0x2000);
135
136                 cx_write(TS_GEN_CNTRL, 0x06); /* punctured clock TS & posedge driven */
137                 udelay(100);
138         } else {
139                 printk( "%s() Failed. Unsupported value in .mpeg (0x%08x)\n", __FUNCTION__,
140                         cx88_boards[core->board].mpeg );
141                 return -EINVAL;
142         }
143
144         /* reset counter */
145         cx_write(MO_TS_GPCNTRL, GP_COUNT_CONTROL_RESET);
146         q->count = 1;
147
148         /* enable irqs */
149         dprintk( 1, "setting the interrupt mask\n" );
150         cx_set(MO_PCI_INTMSK, core->pci_irqmask | 0x04);
151         cx_set(MO_TS_INTMSK,  0x1f0011);
152
153         /* start dma */
154         cx_set(MO_DEV_CNTRL2, (1<<5));
155         cx_set(MO_TS_DMACNTRL, 0x11);
156         return 0;
157 }
158
159 static int cx8802_stop_dma(struct cx8802_dev *dev)
160 {
161         struct cx88_core *core = dev->core;
162         dprintk( 1, "cx8802_stop_dma\n" );
163
164         /* stop dma */
165         cx_clear(MO_TS_DMACNTRL, 0x11);
166
167         /* disable irqs */
168         cx_clear(MO_PCI_INTMSK, 0x000004);
169         cx_clear(MO_TS_INTMSK, 0x1f0011);
170
171         /* Reset the controller */
172         cx_write(TS_GEN_CNTRL, 0xcd);
173         return 0;
174 }
175
176 static int cx8802_restart_queue(struct cx8802_dev    *dev,
177                                 struct cx88_dmaqueue *q)
178 {
179         struct cx88_buffer *buf;
180         struct list_head *item;
181
182        dprintk( 1, "cx8802_restart_queue\n" );
183         if (list_empty(&q->active))
184         {
185                struct cx88_buffer *prev;
186                prev = NULL;
187
188                dprintk(1, "cx8802_restart_queue: queue is empty\n" );
189
190                for (;;) {
191                        if (list_empty(&q->queued))
192                                return 0;
193                        buf = list_entry(q->queued.next, struct cx88_buffer, vb.queue);
194                        if (NULL == prev) {
195                                list_del(&buf->vb.queue);
196                                list_add_tail(&buf->vb.queue,&q->active);
197                                cx8802_start_dma(dev, q, buf);
198                                buf->vb.state = STATE_ACTIVE;
199                                buf->count    = q->count++;
200                                mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
201                                dprintk(1,"[%p/%d] restart_queue - first active\n",
202                                        buf,buf->vb.i);
203
204                        } else if (prev->vb.width  == buf->vb.width  &&
205                                   prev->vb.height == buf->vb.height &&
206                                   prev->fmt       == buf->fmt) {
207                                list_del(&buf->vb.queue);
208                                list_add_tail(&buf->vb.queue,&q->active);
209                                buf->vb.state = STATE_ACTIVE;
210                                buf->count    = q->count++;
211                                prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
212                                dprintk(1,"[%p/%d] restart_queue - move to active\n",
213                                        buf,buf->vb.i);
214                        } else {
215                                return 0;
216                        }
217                        prev = buf;
218                }
219                 return 0;
220         }
221
222         buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
223         dprintk(2,"restart_queue [%p/%d]: restart dma\n",
224                 buf, buf->vb.i);
225         cx8802_start_dma(dev, q, buf);
226         list_for_each(item,&q->active) {
227                 buf = list_entry(item, struct cx88_buffer, vb.queue);
228                 buf->count = q->count++;
229         }
230         mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
231         return 0;
232 }
233
234 /* ------------------------------------------------------------------ */
235
236 int cx8802_buf_prepare(struct videobuf_queue *q, struct cx8802_dev *dev,
237                         struct cx88_buffer *buf, enum v4l2_field field)
238 {
239         int size = dev->ts_packet_size * dev->ts_packet_count;
240         int rc;
241
242         dprintk(1, "%s: %p\n", __FUNCTION__, buf);
243         if (0 != buf->vb.baddr  &&  buf->vb.bsize < size)
244                 return -EINVAL;
245
246         if (STATE_NEEDS_INIT == buf->vb.state) {
247                 buf->vb.width  = dev->ts_packet_size;
248                 buf->vb.height = dev->ts_packet_count;
249                 buf->vb.size   = size;
250                 buf->vb.field  = field /*V4L2_FIELD_TOP*/;
251
252                 if (0 != (rc = videobuf_iolock(q,&buf->vb,NULL)))
253                         goto fail;
254                 cx88_risc_databuffer(dev->pci, &buf->risc,
255                                      buf->vb.dma.sglist,
256                                      buf->vb.width, buf->vb.height);
257         }
258         buf->vb.state = STATE_PREPARED;
259         return 0;
260
261  fail:
262         cx88_free_buffer(q,buf);
263         return rc;
264 }
265
266 void cx8802_buf_queue(struct cx8802_dev *dev, struct cx88_buffer *buf)
267 {
268         struct cx88_buffer    *prev;
269         struct cx88_dmaqueue  *cx88q = &dev->mpegq;
270
271         dprintk( 1, "cx8802_buf_queue\n" );
272         /* add jump to stopper */
273         buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
274         buf->risc.jmp[1] = cpu_to_le32(cx88q->stopper.dma);
275
276         if (list_empty(&cx88q->active)) {
277                 dprintk( 1, "queue is empty - first active\n" );
278                 list_add_tail(&buf->vb.queue,&cx88q->active);
279                 cx8802_start_dma(dev, cx88q, buf);
280                 buf->vb.state = STATE_ACTIVE;
281                 buf->count    = cx88q->count++;
282                 mod_timer(&cx88q->timeout, jiffies+BUFFER_TIMEOUT);
283                 dprintk(1,"[%p/%d] %s - first active\n",
284                         buf, buf->vb.i, __FUNCTION__);
285
286         } else {
287                 dprintk( 1, "queue is not empty - append to active\n" );
288                 prev = list_entry(cx88q->active.prev, struct cx88_buffer, vb.queue);
289                 list_add_tail(&buf->vb.queue,&cx88q->active);
290                 buf->vb.state = STATE_ACTIVE;
291                 buf->count    = cx88q->count++;
292                 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
293                 dprintk( 1, "[%p/%d] %s - append to active\n",
294                         buf, buf->vb.i, __FUNCTION__);
295         }
296 }
297
298 /* ----------------------------------------------------------- */
299
300 static void do_cancel_buffers(struct cx8802_dev *dev, char *reason, int restart)
301 {
302         struct cx88_dmaqueue *q = &dev->mpegq;
303         struct cx88_buffer *buf;
304         unsigned long flags;
305
306         spin_lock_irqsave(&dev->slock,flags);
307         while (!list_empty(&q->active)) {
308                 buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
309                 list_del(&buf->vb.queue);
310                 buf->vb.state = STATE_ERROR;
311                 wake_up(&buf->vb.done);
312                 dprintk(1,"[%p/%d] %s - dma=0x%08lx\n",
313                         buf, buf->vb.i, reason, (unsigned long)buf->risc.dma);
314         }
315         if (restart)
316         {
317                 dprintk(1, "restarting queue\n" );
318                 cx8802_restart_queue(dev,q);
319         }
320         spin_unlock_irqrestore(&dev->slock,flags);
321 }
322
323 void cx8802_cancel_buffers(struct cx8802_dev *dev)
324 {
325         struct cx88_dmaqueue *q = &dev->mpegq;
326
327         dprintk( 1, "cx8802_cancel_buffers" );
328         del_timer_sync(&q->timeout);
329         cx8802_stop_dma(dev);
330         do_cancel_buffers(dev,"cancel",0);
331 }
332
333 static void cx8802_timeout(unsigned long data)
334 {
335         struct cx8802_dev *dev = (struct cx8802_dev*)data;
336
337         dprintk(0, "%s\n",__FUNCTION__);
338
339         if (debug)
340                 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
341         cx8802_stop_dma(dev);
342         do_cancel_buffers(dev,"timeout",1);
343 }
344
345 static char *cx88_mpeg_irqs[32] = {
346         "ts_risci1", NULL, NULL, NULL,
347         "ts_risci2", NULL, NULL, NULL,
348         "ts_oflow",  NULL, NULL, NULL,
349         "ts_sync",   NULL, NULL, NULL,
350         "opc_err", "par_err", "rip_err", "pci_abort",
351         "ts_err?",
352 };
353
354 static void cx8802_mpeg_irq(struct cx8802_dev *dev)
355 {
356         struct cx88_core *core = dev->core;
357         u32 status, mask, count;
358
359         dprintk( 1, "cx8802_mpeg_irq\n" );
360         status = cx_read(MO_TS_INTSTAT);
361         mask   = cx_read(MO_TS_INTMSK);
362         if (0 == (status & mask))
363                 return;
364
365         cx_write(MO_TS_INTSTAT, status);
366
367         if (debug || (status & mask & ~0xff))
368                 cx88_print_irqbits(core->name, "irq mpeg ",
369                                    cx88_mpeg_irqs, ARRAY_SIZE(cx88_mpeg_irqs),
370                                    status, mask);
371
372         /* risc op code error */
373         if (status & (1 << 16)) {
374                 printk(KERN_WARNING "%s: mpeg risc op code error\n",core->name);
375                 cx_clear(MO_TS_DMACNTRL, 0x11);
376                 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
377         }
378
379         /* risc1 y */
380         if (status & 0x01) {
381                 dprintk( 1, "wake up\n" );
382                 spin_lock(&dev->slock);
383                 count = cx_read(MO_TS_GPCNT);
384                 cx88_wakeup(dev->core, &dev->mpegq, count);
385                 spin_unlock(&dev->slock);
386         }
387
388         /* risc2 y */
389         if (status & 0x10) {
390                 spin_lock(&dev->slock);
391                 cx8802_restart_queue(dev,&dev->mpegq);
392                 spin_unlock(&dev->slock);
393         }
394
395         /* other general errors */
396         if (status & 0x1f0100) {
397                 dprintk( 0, "general errors: 0x%08x\n", status & 0x1f0100 );
398                 spin_lock(&dev->slock);
399                 cx8802_stop_dma(dev);
400                 cx8802_restart_queue(dev,&dev->mpegq);
401                 spin_unlock(&dev->slock);
402         }
403 }
404
405 #define MAX_IRQ_LOOP 10
406
407 static irqreturn_t cx8802_irq(int irq, void *dev_id)
408 {
409         struct cx8802_dev *dev = dev_id;
410         struct cx88_core *core = dev->core;
411         u32 status;
412         int loop, handled = 0;
413
414         for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
415                 status = cx_read(MO_PCI_INTSTAT) & (core->pci_irqmask | 0x04);
416                 if (0 == status)
417                         goto out;
418                 dprintk( 1, "cx8802_irq\n" );
419                 dprintk( 1, "    loop: %d/%d\n", loop, MAX_IRQ_LOOP );
420                 dprintk( 1, "    status: %d\n", status );
421                 handled = 1;
422                 cx_write(MO_PCI_INTSTAT, status);
423
424                 if (status & core->pci_irqmask)
425                         cx88_core_irq(core,status);
426                 if (status & 0x04)
427                         cx8802_mpeg_irq(dev);
428         };
429         if (MAX_IRQ_LOOP == loop) {
430                 dprintk( 0, "clearing mask\n" );
431                 printk(KERN_WARNING "%s/0: irq loop -- clearing mask\n",
432                        core->name);
433                 cx_write(MO_PCI_INTMSK,0);
434         }
435
436  out:
437         return IRQ_RETVAL(handled);
438 }
439
440 /* ----------------------------------------------------------- */
441 /* exported stuff                                              */
442
443 int cx8802_init_common(struct cx8802_dev *dev)
444 {
445         struct cx88_core *core = dev->core;
446         int err;
447
448         /* pci init */
449         if (pci_enable_device(dev->pci))
450                 return -EIO;
451         pci_set_master(dev->pci);
452         if (!pci_dma_supported(dev->pci,DMA_32BIT_MASK)) {
453                 printk("%s/2: Oops: no 32bit PCI DMA ???\n",dev->core->name);
454                 return -EIO;
455         }
456
457         pci_read_config_byte(dev->pci, PCI_CLASS_REVISION, &dev->pci_rev);
458         pci_read_config_byte(dev->pci, PCI_LATENCY_TIMER,  &dev->pci_lat);
459         printk(KERN_INFO "%s/2: found at %s, rev: %d, irq: %d, "
460                "latency: %d, mmio: 0x%llx\n", dev->core->name,
461                pci_name(dev->pci), dev->pci_rev, dev->pci->irq,
462                dev->pci_lat,(unsigned long long)pci_resource_start(dev->pci,0));
463
464         /* initialize driver struct */
465         spin_lock_init(&dev->slock);
466
467         /* init dma queue */
468         INIT_LIST_HEAD(&dev->mpegq.active);
469         INIT_LIST_HEAD(&dev->mpegq.queued);
470         dev->mpegq.timeout.function = cx8802_timeout;
471         dev->mpegq.timeout.data     = (unsigned long)dev;
472         init_timer(&dev->mpegq.timeout);
473         cx88_risc_stopper(dev->pci,&dev->mpegq.stopper,
474                           MO_TS_DMACNTRL,0x11,0x00);
475
476         /* get irq */
477         err = request_irq(dev->pci->irq, cx8802_irq,
478                           IRQF_SHARED | IRQF_DISABLED, dev->core->name, dev);
479         if (err < 0) {
480                 printk(KERN_ERR "%s: can't get IRQ %d\n",
481                        dev->core->name, dev->pci->irq);
482                 return err;
483         }
484         cx_set(MO_PCI_INTMSK, core->pci_irqmask);
485
486         /* everything worked */
487         pci_set_drvdata(dev->pci,dev);
488         return 0;
489 }
490
491 void cx8802_fini_common(struct cx8802_dev *dev)
492 {
493         dprintk( 2, "cx8802_fini_common\n" );
494         cx8802_stop_dma(dev);
495         pci_disable_device(dev->pci);
496
497         /* unregister stuff */
498         free_irq(dev->pci->irq, dev);
499         pci_set_drvdata(dev->pci, NULL);
500
501         /* free memory */
502         btcx_riscmem_free(dev->pci,&dev->mpegq.stopper);
503 }
504
505 /* ----------------------------------------------------------- */
506
507 int cx8802_suspend_common(struct pci_dev *pci_dev, pm_message_t state)
508 {
509         struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
510         struct cx88_core *core = dev->core;
511
512         /* stop mpeg dma */
513         spin_lock(&dev->slock);
514         if (!list_empty(&dev->mpegq.active)) {
515                 dprintk( 2, "suspend\n" );
516                 printk("%s: suspend mpeg\n", core->name);
517                 cx8802_stop_dma(dev);
518                 del_timer(&dev->mpegq.timeout);
519         }
520         spin_unlock(&dev->slock);
521
522         /* FIXME -- shutdown device */
523         cx88_shutdown(dev->core);
524
525         pci_save_state(pci_dev);
526         if (0 != pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state))) {
527                 pci_disable_device(pci_dev);
528                 dev->state.disabled = 1;
529         }
530         return 0;
531 }
532
533 int cx8802_resume_common(struct pci_dev *pci_dev)
534 {
535         struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
536         struct cx88_core *core = dev->core;
537         int err;
538
539         if (dev->state.disabled) {
540                 err=pci_enable_device(pci_dev);
541                 if (err) {
542                         printk(KERN_ERR "%s: can't enable device\n",
543                                                dev->core->name);
544                         return err;
545                 }
546                 dev->state.disabled = 0;
547         }
548         err=pci_set_power_state(pci_dev, PCI_D0);
549         if (err) {
550                 printk(KERN_ERR "%s: can't enable device\n",
551                                                dev->core->name);
552                 pci_disable_device(pci_dev);
553                 dev->state.disabled = 1;
554
555                 return err;
556         }
557         pci_restore_state(pci_dev);
558
559         /* FIXME: re-initialize hardware */
560         cx88_reset(dev->core);
561
562         /* restart video+vbi capture */
563         spin_lock(&dev->slock);
564         if (!list_empty(&dev->mpegq.active)) {
565                 printk("%s: resume mpeg\n", core->name);
566                 cx8802_restart_queue(dev,&dev->mpegq);
567         }
568         spin_unlock(&dev->slock);
569
570         return 0;
571 }
572
573 struct cx8802_dev * cx8802_get_device(struct inode *inode)
574 {
575         int minor = iminor(inode);
576         struct cx8802_dev *h = NULL;
577         struct list_head *list;
578
579         list_for_each(list,&cx8802_devlist) {
580                 h = list_entry(list, struct cx8802_dev, devlist);
581                 if (h->mpeg_dev->minor == minor)
582                         return h;
583         }
584
585         return NULL;
586 }
587
588 struct cx8802_driver * cx8802_get_driver(struct cx8802_dev *dev, enum cx88_board_type btype)
589 {
590         struct cx8802_dev *h = NULL;
591         struct cx8802_driver *d = NULL;
592         struct list_head *list;
593         struct list_head *list2;
594
595         list_for_each(list,&cx8802_devlist) {
596                 h = list_entry(list, struct cx8802_dev, devlist);
597                 if (h != dev)
598                         continue;
599
600                 list_for_each(list2, &h->drvlist.devlist) {
601                         d = list_entry(list2, struct cx8802_driver, devlist);
602
603                         /* only unregister the correct driver type */
604                         if (d->type_id == btype) {
605                                 return d;
606                         }
607                 }
608         }
609
610         return NULL;
611 }
612
613 /* Driver asked for hardware access. */
614 int cx8802_request_acquire(struct cx8802_driver *drv)
615 {
616         struct cx88_core *core = drv->core;
617
618         /* Fail a request for hardware if the device is busy. */
619         if (core->active_type_id != CX88_BOARD_NONE)
620                 return -EBUSY;
621
622         if (drv->advise_acquire)
623         {
624                 core->active_type_id = drv->type_id;
625                 drv->advise_acquire(drv);
626
627                 mpeg_dbg(1,"%s() Post acquire GPIO=%x\n", __FUNCTION__, cx_read(MO_GP0_IO));
628         }
629
630         return 0;
631 }
632
633 /* Driver asked to release hardware. */
634 int cx8802_request_release(struct cx8802_driver *drv)
635 {
636         struct cx88_core *core = drv->core;
637
638         if (drv->advise_release)
639         {
640                 drv->advise_release(drv);
641                 core->active_type_id = CX88_BOARD_NONE;
642                 mpeg_dbg(1,"%s() Post release GPIO=%x\n", __FUNCTION__, cx_read(MO_GP0_IO));
643         }
644
645         return 0;
646 }
647
648 static int cx8802_check_driver(struct cx8802_driver *drv)
649 {
650         if (drv == NULL)
651                 return -ENODEV;
652
653         if ((drv->type_id != CX88_MPEG_DVB) &&
654                 (drv->type_id != CX88_MPEG_BLACKBIRD))
655                 return -EINVAL;
656
657         if ((drv->hw_access != CX8802_DRVCTL_SHARED) &&
658                 (drv->hw_access != CX8802_DRVCTL_EXCLUSIVE))
659                 return -EINVAL;
660
661         if ((drv->probe == NULL) ||
662                 (drv->remove == NULL) ||
663                 (drv->advise_acquire == NULL) ||
664                 (drv->advise_release == NULL))
665                 return -EINVAL;
666
667         return 0;
668 }
669
670 int cx8802_register_driver(struct cx8802_driver *drv)
671 {
672         struct cx8802_dev *h;
673         struct cx8802_driver *driver;
674         struct list_head *list;
675         int err = 0, i = 0;
676
677         printk(KERN_INFO "%s() ->registering driver type=%s access=%s\n", __FUNCTION__ ,
678                 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
679                 drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
680
681         if ((err = cx8802_check_driver(drv)) != 0) {
682                 printk(KERN_INFO "%s() cx8802_driver is invalid\n", __FUNCTION__ );
683                 return err;
684         }
685
686         list_for_each(list,&cx8802_devlist) {
687                 h = list_entry(list, struct cx8802_dev, devlist);
688
689                 printk(KERN_INFO "CORE %s: subsystem: %04x:%04x, board: %s [card=%d]\n",
690                         h->core->name,h->pci->subsystem_vendor,
691                         h->pci->subsystem_device,cx88_boards[h->core->board].name,
692                         h->core->board);
693
694                 /* Bring up a new struct for each driver instance */
695                 driver = kzalloc(sizeof(*drv),GFP_KERNEL);
696                 if (driver == NULL)
697                         return -ENOMEM;
698
699                 /* Snapshot of the driver registration data */
700                 drv->core = h->core;
701                 drv->suspend = cx8802_suspend_common;
702                 drv->resume = cx8802_resume_common;
703                 drv->request_acquire = cx8802_request_acquire;
704                 drv->request_release = cx8802_request_release;
705                 memcpy(driver, drv, sizeof(*driver));
706
707                 err = drv->probe(driver);
708                 if (err == 0) {
709                         i++;
710                         mutex_lock(&drv->core->lock);
711                         list_add_tail(&driver->devlist,&h->drvlist.devlist);
712                         mutex_unlock(&drv->core->lock);
713                 } else {
714                         printk(KERN_ERR "%s() ->probe failed err = %d\n", __FUNCTION__, err);
715                 }
716
717         }
718         if (i == 0)
719                 err = -ENODEV;
720         else
721                 err = 0;
722
723         return err;
724 }
725
726 int cx8802_unregister_driver(struct cx8802_driver *drv)
727 {
728         struct cx8802_dev *h;
729         struct cx8802_driver *d;
730         struct list_head *list;
731         struct list_head *list2, *q;
732         int err = 0, i = 0;
733
734         printk(KERN_INFO "%s() ->unregistering driver type=%s\n", __FUNCTION__ ,
735                 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird");
736
737         list_for_each(list,&cx8802_devlist) {
738                 i++;
739                 h = list_entry(list, struct cx8802_dev, devlist);
740
741                 printk(KERN_INFO "CORE %s: subsystem: %04x:%04x, board: %s [card=%d]\n",
742                         h->core->name,h->pci->subsystem_vendor,
743                         h->pci->subsystem_device,cx88_boards[h->core->board].name,
744                         h->core->board);
745
746                 list_for_each_safe(list2, q, &h->drvlist.devlist) {
747                         d = list_entry(list2, struct cx8802_driver, devlist);
748
749                         /* only unregister the correct driver type */
750                         if (d->type_id != drv->type_id)
751                                 continue;
752
753                         err = d->remove(d);
754                         if (err == 0) {
755                                 mutex_lock(&drv->core->lock);
756                                 list_del(list2);
757                                 mutex_unlock(&drv->core->lock);
758                         } else
759                                 printk(KERN_ERR "%s() ->remove failed err = %d\n", __FUNCTION__, err);
760
761                 }
762
763         }
764
765         return err;
766 }
767
768 /* ----------------------------------------------------------- */
769 static int __devinit cx8802_probe(struct pci_dev *pci_dev,
770                                const struct pci_device_id *pci_id)
771 {
772         struct cx8802_dev *dev;
773         struct cx88_core  *core;
774         int err;
775
776         /* general setup */
777         core = cx88_core_get(pci_dev);
778         if (NULL == core)
779                 return -EINVAL;
780
781         printk("%s/2: cx2388x 8802 Driver Manager\n", core->name);
782
783         err = -ENODEV;
784         if (!cx88_boards[core->board].mpeg)
785                 goto fail_core;
786
787         err = -ENOMEM;
788         dev = kzalloc(sizeof(*dev),GFP_KERNEL);
789         if (NULL == dev)
790                 goto fail_core;
791         dev->pci = pci_dev;
792         dev->core = core;
793
794         err = cx8802_init_common(dev);
795         if (err != 0)
796                 goto fail_free;
797
798         INIT_LIST_HEAD(&dev->drvlist.devlist);
799         list_add_tail(&dev->devlist,&cx8802_devlist);
800
801         /* Maintain a reference so cx88-video can query the 8802 device. */
802         core->dvbdev = dev;
803
804         /* now autoload cx88-dvb or cx88-blackbird */
805         request_modules(dev);
806         return 0;
807
808  fail_free:
809         kfree(dev);
810  fail_core:
811         cx88_core_put(core,pci_dev);
812         return err;
813 }
814
815 static void __devexit cx8802_remove(struct pci_dev *pci_dev)
816 {
817         struct cx8802_dev *dev;
818         struct cx8802_driver *h;
819         struct list_head *list;
820
821         dev = pci_get_drvdata(pci_dev);
822
823         dprintk( 1, "%s\n", __FUNCTION__);
824
825         list_for_each(list,&dev->drvlist.devlist) {
826                 h = list_entry(list, struct cx8802_driver, devlist);
827                 dprintk( 1, " ->driver\n");
828                 if (h->remove == NULL) {
829                         printk(KERN_ERR "%s .. skipping driver, no probe function\n", __FUNCTION__);
830                         continue;
831                 }
832                 printk(KERN_INFO "%s .. Removing driver type %d\n", __FUNCTION__, h->type_id);
833                 cx8802_unregister_driver(h);
834                 list_del(&dev->drvlist.devlist);
835         }
836
837         /* Destroy any 8802 reference. */
838         dev->core->dvbdev = NULL;
839
840         /* common */
841         cx8802_fini_common(dev);
842         cx88_core_put(dev->core,dev->pci);
843         kfree(dev);
844 }
845
846 static struct pci_device_id cx8802_pci_tbl[] = {
847         {
848                 .vendor       = 0x14f1,
849                 .device       = 0x8802,
850                 .subvendor    = PCI_ANY_ID,
851                 .subdevice    = PCI_ANY_ID,
852         },{
853                 /* --- end of list --- */
854         }
855 };
856 MODULE_DEVICE_TABLE(pci, cx8802_pci_tbl);
857
858 static struct pci_driver cx8802_pci_driver = {
859         .name     = "cx88-mpeg driver manager",
860         .id_table = cx8802_pci_tbl,
861         .probe    = cx8802_probe,
862         .remove   = __devexit_p(cx8802_remove),
863 };
864
865 static int cx8802_init(void)
866 {
867         printk(KERN_INFO "cx2388x cx88-mpeg Driver Manager version %d.%d.%d loaded\n",
868                (CX88_VERSION_CODE >> 16) & 0xff,
869                (CX88_VERSION_CODE >>  8) & 0xff,
870                CX88_VERSION_CODE & 0xff);
871 #ifdef SNAPSHOT
872         printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
873                SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
874 #endif
875         return pci_register_driver(&cx8802_pci_driver);
876 }
877
878 static void cx8802_fini(void)
879 {
880         pci_unregister_driver(&cx8802_pci_driver);
881 }
882
883 module_init(cx8802_init);
884 module_exit(cx8802_fini);
885 EXPORT_SYMBOL(cx8802_buf_prepare);
886 EXPORT_SYMBOL(cx8802_buf_queue);
887 EXPORT_SYMBOL(cx8802_cancel_buffers);
888
889 EXPORT_SYMBOL(cx8802_init_common);
890 EXPORT_SYMBOL(cx8802_fini_common);
891
892 EXPORT_SYMBOL(cx8802_register_driver);
893 EXPORT_SYMBOL(cx8802_unregister_driver);
894 EXPORT_SYMBOL(cx8802_get_device);
895 EXPORT_SYMBOL(cx8802_get_driver);
896 /* ----------------------------------------------------------- */
897 /*
898  * Local variables:
899  * c-basic-offset: 8
900  * End:
901  * 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
902  */