Merge branch 'linux-2.6' into for-2.6.22
[linux-2.6] / drivers / media / video / cx88 / cx88-alsa.c
1 /*
2  *
3  *  Support for audio capture
4  *  PCI function #1 of the cx2388x.
5  *
6  *    (c) 2005,2006 Ricardo Cerqueira <v4l@cerqueira.org>
7  *    (c) 2005 Mauro Carvalho Chehab <mchehab@infradead.org>
8  *    Based on a dummy cx88 module by Gerd Knorr <kraxel@bytesex.org>
9  *    Based on dummy.c by Jaroslav Kysela <perex@suse.cz>
10  *
11  *  This program is free software; you can redistribute it and/or modify
12  *  it under the terms of the GNU General Public License as published by
13  *  the Free Software Foundation; either version 2 of the License, or
14  *  (at your option) any later version.
15  *
16  *  This program is distributed in the hope that it will be useful,
17  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
18  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
19  *  GNU General Public License for more details.
20  *
21  *  You should have received a copy of the GNU General Public License
22  *  along with this program; if not, write to the Free Software
23  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24  */
25
26 #include <linux/module.h>
27 #include <linux/init.h>
28 #include <linux/device.h>
29 #include <linux/interrupt.h>
30 #include <asm/delay.h>
31 #include <sound/driver.h>
32 #include <sound/core.h>
33 #include <sound/pcm.h>
34 #include <sound/pcm_params.h>
35 #include <sound/control.h>
36 #include <sound/initval.h>
37
38 #include "cx88.h"
39 #include "cx88-reg.h"
40
41 #define dprintk(level,fmt, arg...)      if (debug >= level) \
42         printk(KERN_INFO "%s/1: " fmt, chip->core->name , ## arg)
43
44 #define dprintk_core(level,fmt, arg...) if (debug >= level) \
45         printk(KERN_DEBUG "%s/1: " fmt, chip->core->name , ## arg)
46
47
48 /****************************************************************************
49         Data type declarations - Can be moded to a header file later
50  ****************************************************************************/
51
52 /* These can be replaced after done */
53 #define MIXER_ADDR_LAST MAX_CX88_INPUT
54
55 struct cx88_audio_dev {
56         struct cx88_core           *core;
57         struct cx88_dmaqueue       q;
58
59         /* pci i/o */
60         struct pci_dev             *pci;
61         unsigned char              pci_rev,pci_lat;
62
63         /* audio controls */
64         int                        irq;
65
66         struct snd_card            *card;
67
68         spinlock_t                 reg_lock;
69
70         unsigned int               dma_size;
71         unsigned int               period_size;
72         unsigned int               num_periods;
73
74         struct videobuf_dmabuf dma_risc;
75
76         int                        mixer_volume[MIXER_ADDR_LAST+1][2];
77         int                        capture_source[MIXER_ADDR_LAST+1][2];
78
79         long int read_count;
80         long int read_offset;
81
82         struct cx88_buffer   *buf;
83
84         long opened;
85         struct snd_pcm_substream *substream;
86
87 };
88 typedef struct cx88_audio_dev snd_cx88_card_t;
89
90
91
92 /****************************************************************************
93                         Module global static vars
94  ****************************************************************************/
95
96 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
97 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
98 static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 1};
99 static struct snd_card *snd_cx88_cards[SNDRV_CARDS];
100
101 module_param_array(enable, bool, NULL, 0444);
102 MODULE_PARM_DESC(enable, "Enable cx88x soundcard. default enabled.");
103
104 module_param_array(index, int, NULL, 0444);
105 MODULE_PARM_DESC(index, "Index value for cx88x capture interface(s).");
106
107
108 /****************************************************************************
109                                 Module macros
110  ****************************************************************************/
111
112 MODULE_DESCRIPTION("ALSA driver module for cx2388x based TV cards");
113 MODULE_AUTHOR("Ricardo Cerqueira");
114 MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
115 MODULE_LICENSE("GPL");
116 MODULE_SUPPORTED_DEVICE("{{Conexant,23881},"
117                         "{{Conexant,23882},"
118                         "{{Conexant,23883}");
119 static unsigned int debug;
120 module_param(debug,int,0644);
121 MODULE_PARM_DESC(debug,"enable debug messages");
122
123 /****************************************************************************
124                         Module specific funtions
125  ****************************************************************************/
126
127 /*
128  * BOARD Specific: Sets audio DMA
129  */
130
131 static int _cx88_start_audio_dma(snd_cx88_card_t *chip)
132 {
133         struct cx88_buffer   *buf = chip->buf;
134         struct cx88_core *core=chip->core;
135         struct sram_channel *audio_ch = &cx88_sram_channels[SRAM_CH25];
136
137
138         dprintk(1, "Starting audio DMA for %i bytes/line and %i (%i) lines at address %08x\n",buf->bpl, chip->num_periods, audio_ch->fifo_size / buf->bpl, audio_ch->fifo_start);
139
140         /* setup fifo + format - out channel */
141         cx88_sram_channel_setup(chip->core, &cx88_sram_channels[SRAM_CH25],
142                                 buf->bpl, buf->risc.dma);
143
144         /* sets bpl size */
145         cx_write(MO_AUDD_LNGTH, buf->bpl);
146
147         /* reset counter */
148         cx_write(MO_AUDD_GPCNTRL,GP_COUNT_CONTROL_RESET);
149
150         dprintk(1,"Enabling IRQ, setting mask from 0x%x to 0x%x\n",chip->core->pci_irqmask,(chip->core->pci_irqmask | 0x02));
151         /* enable irqs */
152         cx_set(MO_PCI_INTMSK, chip->core->pci_irqmask | 0x02);
153
154
155         /* Enables corresponding bits at AUD_INT_STAT */
156         cx_write(MO_AUD_INTMSK,
157                         (1<<16)|
158                         (1<<12)|
159                         (1<<4)|
160                         (1<<0)
161                         );
162
163         /* start dma */
164         cx_set(MO_DEV_CNTRL2, (1<<5)); /* Enables Risc Processor */
165         cx_set(MO_AUD_DMACNTRL, 0x11); /* audio downstream FIFO and RISC enable */
166
167         if (debug)
168                 cx88_sram_channel_dump(chip->core, &cx88_sram_channels[SRAM_CH25]);
169
170         return 0;
171 }
172
173 /*
174  * BOARD Specific: Resets audio DMA
175  */
176 static int _cx88_stop_audio_dma(snd_cx88_card_t *chip)
177 {
178         struct cx88_core *core=chip->core;
179         dprintk(1, "Stopping audio DMA\n");
180
181         /* stop dma */
182         cx_clear(MO_AUD_DMACNTRL, 0x11);
183
184         /* disable irqs */
185         cx_clear(MO_PCI_INTMSK, 0x02);
186         cx_clear(MO_AUD_INTMSK,
187                         (1<<16)|
188                         (1<<12)|
189                         (1<<4)|
190                         (1<<0)
191                         );
192
193         if (debug)
194                 cx88_sram_channel_dump(chip->core, &cx88_sram_channels[SRAM_CH25]);
195
196         return 0;
197 }
198
199 #define MAX_IRQ_LOOP 10
200
201 /*
202  * BOARD Specific: IRQ dma bits
203  */
204 static char *cx88_aud_irqs[32] = {
205         "dn_risci1", "up_risci1", "rds_dn_risc1", /* 0-2 */
206         NULL,                                     /* reserved */
207         "dn_risci2", "up_risci2", "rds_dn_risc2", /* 4-6 */
208         NULL,                                     /* reserved */
209         "dnf_of", "upf_uf", "rds_dnf_uf",         /* 8-10 */
210         NULL,                                     /* reserved */
211         "dn_sync", "up_sync", "rds_dn_sync",      /* 12-14 */
212         NULL,                                     /* reserved */
213         "opc_err", "par_err", "rip_err",          /* 16-18 */
214         "pci_abort", "ber_irq", "mchg_irq"        /* 19-21 */
215 };
216
217 /*
218  * BOARD Specific: Threats IRQ audio specific calls
219  */
220 static void cx8801_aud_irq(snd_cx88_card_t *chip)
221 {
222         struct cx88_core *core = chip->core;
223         u32 status, mask;
224         u32 count;
225
226         status = cx_read(MO_AUD_INTSTAT);
227         mask   = cx_read(MO_AUD_INTMSK);
228         if (0 == (status & mask)) {
229                 spin_unlock(&chip->reg_lock);
230                 return;
231         }
232         cx_write(MO_AUD_INTSTAT, status);
233         if (debug > 1  ||  (status & mask & ~0xff))
234                 cx88_print_irqbits(core->name, "irq aud",
235                                    cx88_aud_irqs, ARRAY_SIZE(cx88_aud_irqs),
236                                    status, mask);
237         /* risc op code error */
238         if (status & (1 << 16)) {
239                 printk(KERN_WARNING "%s/0: audio risc op code error\n",core->name);
240                 cx_clear(MO_AUD_DMACNTRL, 0x11);
241                 cx88_sram_channel_dump(core, &cx88_sram_channels[SRAM_CH25]);
242         }
243
244         /* risc1 downstream */
245         if (status & 0x01) {
246                 spin_lock(&chip->reg_lock);
247                 count = cx_read(MO_AUDD_GPCNT);
248                 spin_unlock(&chip->reg_lock);
249                 if (chip->read_count == 0)
250                         chip->read_count += chip->dma_size;
251         }
252
253         if  (chip->read_count >= chip->period_size) {
254                 dprintk(2, "Elapsing period\n");
255                 snd_pcm_period_elapsed(chip->substream);
256         }
257
258         dprintk(3,"Leaving audio IRQ handler...\n");
259
260         /* FIXME: Any other status should deserve a special handling? */
261 }
262
263 /*
264  * BOARD Specific: Handles IRQ calls
265  */
266 static irqreturn_t cx8801_irq(int irq, void *dev_id)
267 {
268         snd_cx88_card_t *chip = dev_id;
269         struct cx88_core *core = chip->core;
270         u32 status;
271         int loop, handled = 0;
272
273         for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
274                 status = cx_read(MO_PCI_INTSTAT) & (core->pci_irqmask | 0x02);
275                 if (0 == status)
276                         goto out;
277                 dprintk( 3, "cx8801_irq\n" );
278                 dprintk( 3, "    loop: %d/%d\n", loop, MAX_IRQ_LOOP );
279                 dprintk( 3, "    status: %d\n", status );
280                 handled = 1;
281                 cx_write(MO_PCI_INTSTAT, status);
282
283                 if (status & 0x02)
284                 {
285                         dprintk( 2, "    ALSA IRQ handling\n" );
286                         cx8801_aud_irq(chip);
287                 }
288         };
289
290         if (MAX_IRQ_LOOP == loop) {
291                 dprintk( 0, "clearing mask\n" );
292                 dprintk(1,"%s/0: irq loop -- clearing mask\n",
293                        core->name);
294                 cx_clear(MO_PCI_INTMSK,0x02);
295         }
296
297  out:
298         return IRQ_RETVAL(handled);
299 }
300
301
302 static int dsp_buffer_free(snd_cx88_card_t *chip)
303 {
304         BUG_ON(!chip->dma_size);
305
306         dprintk(2,"Freeing buffer\n");
307         videobuf_pci_dma_unmap(chip->pci, &chip->dma_risc);
308         videobuf_dma_free(&chip->dma_risc);
309         btcx_riscmem_free(chip->pci,&chip->buf->risc);
310         kfree(chip->buf);
311
312         chip->dma_size = 0;
313
314        return 0;
315 }
316
317 /****************************************************************************
318                                 ALSA PCM Interface
319  ****************************************************************************/
320
321 /*
322  * Digital hardware definition
323  */
324 static struct snd_pcm_hardware snd_cx88_digital_hw = {
325         .info = SNDRV_PCM_INFO_MMAP |
326                 SNDRV_PCM_INFO_INTERLEAVED |
327                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
328                 SNDRV_PCM_INFO_MMAP_VALID,
329         .formats = SNDRV_PCM_FMTBIT_S16_LE,
330
331         .rates =                SNDRV_PCM_RATE_48000,
332         .rate_min =             48000,
333         .rate_max =             48000,
334         .channels_min = 1,
335         .channels_max = 2,
336         .buffer_bytes_max = (2*2048),
337         .period_bytes_min = 2048,
338         .period_bytes_max = 2048,
339         .periods_min = 2,
340         .periods_max = 2,
341 };
342
343 /*
344  * audio pcm capture runtime free
345  */
346 static void snd_card_cx88_runtime_free(struct snd_pcm_runtime *runtime)
347 {
348 }
349 /*
350  * audio pcm capture open callback
351  */
352 static int snd_cx88_pcm_open(struct snd_pcm_substream *substream)
353 {
354         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
355         struct snd_pcm_runtime *runtime = substream->runtime;
356         int err;
357
358         if (test_and_set_bit(0, &chip->opened))
359                 return -EBUSY;
360
361         err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
362         if (err < 0)
363                 goto _error;
364
365         chip->substream = substream;
366
367         chip->read_count = 0;
368         chip->read_offset = 0;
369
370         runtime->private_free = snd_card_cx88_runtime_free;
371         runtime->hw = snd_cx88_digital_hw;
372
373         return 0;
374 _error:
375         dprintk(1,"Error opening PCM!\n");
376         clear_bit(0, &chip->opened);
377         smp_mb__after_clear_bit();
378         return err;
379 }
380
381 /*
382  * audio close callback
383  */
384 static int snd_cx88_close(struct snd_pcm_substream *substream)
385 {
386         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
387
388         clear_bit(0, &chip->opened);
389         smp_mb__after_clear_bit();
390
391         return 0;
392 }
393
394 /*
395  * hw_params callback
396  */
397 static int snd_cx88_hw_params(struct snd_pcm_substream * substream,
398                               struct snd_pcm_hw_params * hw_params)
399 {
400         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
401         struct cx88_buffer *buf;
402
403         if (substream->runtime->dma_area) {
404                 dsp_buffer_free(chip);
405                 substream->runtime->dma_area = NULL;
406         }
407
408
409         chip->period_size = params_period_bytes(hw_params);
410         chip->num_periods = params_periods(hw_params);
411         chip->dma_size = chip->period_size * params_periods(hw_params);
412
413         BUG_ON(!chip->dma_size);
414
415         dprintk(1,"Setting buffer\n");
416
417         buf = kzalloc(sizeof(*buf),GFP_KERNEL);
418         if (NULL == buf)
419                 return -ENOMEM;
420
421         buf->vb.memory = V4L2_MEMORY_MMAP;
422         buf->vb.width  = chip->period_size;
423         buf->vb.height = chip->num_periods;
424         buf->vb.size   = chip->dma_size;
425         buf->vb.field  = V4L2_FIELD_NONE;
426
427         videobuf_dma_init(&buf->vb.dma);
428         videobuf_dma_init_kernel(&buf->vb.dma,PCI_DMA_FROMDEVICE,
429                         (PAGE_ALIGN(buf->vb.size) >> PAGE_SHIFT));
430
431         videobuf_pci_dma_map(chip->pci,&buf->vb.dma);
432
433
434         cx88_risc_databuffer(chip->pci, &buf->risc,
435                         buf->vb.dma.sglist,
436                         buf->vb.width, buf->vb.height);
437
438         buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
439         buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
440
441         buf->vb.state = STATE_PREPARED;
442
443         buf->bpl = chip->period_size;
444         chip->buf = buf;
445         chip->dma_risc = buf->vb.dma;
446
447         dprintk(1,"Buffer ready at %u\n",chip->dma_risc.nr_pages);
448         substream->runtime->dma_area = chip->dma_risc.vmalloc;
449         return 0;
450 }
451
452 /*
453  * hw free callback
454  */
455 static int snd_cx88_hw_free(struct snd_pcm_substream * substream)
456 {
457
458         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
459
460         if (substream->runtime->dma_area) {
461                 dsp_buffer_free(chip);
462                 substream->runtime->dma_area = NULL;
463         }
464
465         return 0;
466 }
467
468 /*
469  * prepare callback
470  */
471 static int snd_cx88_prepare(struct snd_pcm_substream *substream)
472 {
473         return 0;
474 }
475
476
477 /*
478  * trigger callback
479  */
480 static int snd_cx88_card_trigger(struct snd_pcm_substream *substream, int cmd)
481 {
482         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
483         int err;
484
485         spin_lock(&chip->reg_lock);
486
487         switch (cmd) {
488         case SNDRV_PCM_TRIGGER_START:
489                 err=_cx88_start_audio_dma(chip);
490                 break;
491         case SNDRV_PCM_TRIGGER_STOP:
492                 err=_cx88_stop_audio_dma(chip);
493                 break;
494         default:
495                 err=-EINVAL;
496                 break;
497         }
498
499         spin_unlock(&chip->reg_lock);
500
501         return err;
502 }
503
504 /*
505  * pointer callback
506  */
507 static snd_pcm_uframes_t snd_cx88_pointer(struct snd_pcm_substream *substream)
508 {
509         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
510         struct snd_pcm_runtime *runtime = substream->runtime;
511
512         if (chip->read_count) {
513                 chip->read_count -= snd_pcm_lib_period_bytes(substream);
514                 chip->read_offset += snd_pcm_lib_period_bytes(substream);
515                 if (chip->read_offset == chip->dma_size)
516                         chip->read_offset = 0;
517         }
518
519         dprintk(2, "Pointer time, will return %li, read %li\n",chip->read_offset,chip->read_count);
520         return bytes_to_frames(runtime, chip->read_offset);
521
522 }
523
524 /*
525  * operators
526  */
527 static struct snd_pcm_ops snd_cx88_pcm_ops = {
528         .open = snd_cx88_pcm_open,
529         .close = snd_cx88_close,
530         .ioctl = snd_pcm_lib_ioctl,
531         .hw_params = snd_cx88_hw_params,
532         .hw_free = snd_cx88_hw_free,
533         .prepare = snd_cx88_prepare,
534         .trigger = snd_cx88_card_trigger,
535         .pointer = snd_cx88_pointer,
536 };
537
538 /*
539  * create a PCM device
540  */
541 static int __devinit snd_cx88_pcm(snd_cx88_card_t *chip, int device, char *name)
542 {
543         int err;
544         struct snd_pcm *pcm;
545
546         err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm);
547         if (err < 0)
548                 return err;
549         pcm->private_data = chip;
550         strcpy(pcm->name, name);
551         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cx88_pcm_ops);
552
553         return 0;
554 }
555
556 /****************************************************************************
557                                 CONTROL INTERFACE
558  ****************************************************************************/
559 static int snd_cx88_capture_volume_info(struct snd_kcontrol *kcontrol,
560                                         struct snd_ctl_elem_info *info)
561 {
562         info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
563         info->count = 1;
564         info->value.integer.min = 0;
565         info->value.integer.max = 0x3f;
566
567         return 0;
568 }
569
570 /* OK - TODO: test it */
571 static int snd_cx88_capture_volume_get(struct snd_kcontrol *kcontrol,
572                                        struct snd_ctl_elem_value *value)
573 {
574         snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
575         struct cx88_core *core=chip->core;
576
577         value->value.integer.value[0] = 0x3f - (cx_read(AUD_VOL_CTL) & 0x3f);
578
579         return 0;
580 }
581
582 /* OK - TODO: test it */
583 static int snd_cx88_capture_volume_put(struct snd_kcontrol *kcontrol,
584                                        struct snd_ctl_elem_value *value)
585 {
586         snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
587         struct cx88_core *core=chip->core;
588         int v;
589         u32 old_control;
590
591         spin_lock_irq(&chip->reg_lock);
592         old_control = 0x3f - (cx_read(AUD_VOL_CTL) & 0x3f);
593         v = 0x3f - (value->value.integer.value[0] & 0x3f);
594         cx_andor(AUD_VOL_CTL, 0x3f, v);
595         spin_unlock_irq(&chip->reg_lock);
596
597         return v != old_control;
598 }
599
600 static struct snd_kcontrol_new snd_cx88_capture_volume = {
601         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
602         .name = "Capture Volume",
603         .info = snd_cx88_capture_volume_info,
604         .get = snd_cx88_capture_volume_get,
605         .put = snd_cx88_capture_volume_put,
606 };
607
608
609 /****************************************************************************
610                         Basic Flow for Sound Devices
611  ****************************************************************************/
612
613 /*
614  * PCI ID Table - 14f1:8801 and 14f1:8811 means function 1: Audio
615  * Only boards with eeprom and byte 1 at eeprom=1 have it
616  */
617
618 static struct pci_device_id cx88_audio_pci_tbl[] __devinitdata = {
619         {0x14f1,0x8801,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
620         {0x14f1,0x8811,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
621         {0, }
622 };
623 MODULE_DEVICE_TABLE(pci, cx88_audio_pci_tbl);
624
625 /*
626  * Chip-specific destructor
627  */
628
629 static int snd_cx88_free(snd_cx88_card_t *chip)
630 {
631
632         if (chip->irq >= 0){
633                 synchronize_irq(chip->irq);
634                 free_irq(chip->irq, chip);
635         }
636
637         cx88_core_put(chip->core,chip->pci);
638
639         pci_disable_device(chip->pci);
640         return 0;
641 }
642
643 /*
644  * Component Destructor
645  */
646 static void snd_cx88_dev_free(struct snd_card * card)
647 {
648         snd_cx88_card_t *chip = card->private_data;
649
650         snd_cx88_free(chip);
651 }
652
653
654 /*
655  * Alsa Constructor - Component probe
656  */
657
658 static int devno;
659 static int __devinit snd_cx88_create(struct snd_card *card,
660                                      struct pci_dev *pci,
661                                      snd_cx88_card_t **rchip)
662 {
663         snd_cx88_card_t   *chip;
664         struct cx88_core  *core;
665         int               err;
666
667         *rchip = NULL;
668
669         err = pci_enable_device(pci);
670         if (err < 0)
671                 return err;
672
673         pci_set_master(pci);
674
675         chip = (snd_cx88_card_t *) card->private_data;
676
677         core = cx88_core_get(pci);
678         if (NULL == core) {
679                 err = -EINVAL;
680                 kfree (chip);
681                 return err;
682         }
683
684         if (!pci_dma_supported(pci,DMA_32BIT_MASK)) {
685                 dprintk(0, "%s/1: Oops: no 32bit PCI DMA ???\n",core->name);
686                 err = -EIO;
687                 cx88_core_put(core,pci);
688                 return err;
689         }
690
691
692         /* pci init */
693         chip->card = card;
694         chip->pci = pci;
695         chip->irq = -1;
696         spin_lock_init(&chip->reg_lock);
697
698         chip->core = core;
699
700         /* get irq */
701         err = request_irq(chip->pci->irq, cx8801_irq,
702                           IRQF_SHARED | IRQF_DISABLED, chip->core->name, chip);
703         if (err < 0) {
704                 dprintk(0, "%s: can't get IRQ %d\n",
705                        chip->core->name, chip->pci->irq);
706                 return err;
707         }
708
709         /* print pci info */
710         pci_read_config_byte(pci, PCI_CLASS_REVISION, &chip->pci_rev);
711         pci_read_config_byte(pci, PCI_LATENCY_TIMER,  &chip->pci_lat);
712
713         dprintk(1,"ALSA %s/%i: found at %s, rev: %d, irq: %d, "
714                "latency: %d, mmio: 0x%llx\n", core->name, devno,
715                pci_name(pci), chip->pci_rev, pci->irq,
716                chip->pci_lat,(unsigned long long)pci_resource_start(pci,0));
717
718         chip->irq = pci->irq;
719         synchronize_irq(chip->irq);
720
721         snd_card_set_dev(card, &pci->dev);
722
723         *rchip = chip;
724
725         return 0;
726 }
727
728 static int __devinit cx88_audio_initdev(struct pci_dev *pci,
729                                     const struct pci_device_id *pci_id)
730 {
731         struct snd_card  *card;
732         snd_cx88_card_t  *chip;
733         int              err;
734
735         if (devno >= SNDRV_CARDS)
736                 return (-ENODEV);
737
738         if (!enable[devno]) {
739                 ++devno;
740                 return (-ENOENT);
741         }
742
743         card = snd_card_new(index[devno], id[devno], THIS_MODULE, sizeof(snd_cx88_card_t));
744         if (!card)
745                 return (-ENOMEM);
746
747         card->private_free = snd_cx88_dev_free;
748
749         err = snd_cx88_create(card, pci, &chip);
750         if (err < 0)
751                 return (err);
752
753         err = snd_cx88_pcm(chip, 0, "CX88 Digital");
754
755         if (err < 0) {
756                 snd_card_free(card);
757                 return (err);
758         }
759
760         err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_capture_volume, chip));
761         if (err < 0) {
762                 snd_card_free(card);
763                 return (err);
764         }
765
766         strcpy (card->driver, "CX88x");
767         sprintf(card->shortname, "Conexant CX%x", pci->device);
768         sprintf(card->longname, "%s at %#llx",
769                 card->shortname,(unsigned long long)pci_resource_start(pci, 0));
770         strcpy (card->mixername, "CX88");
771
772         dprintk (0, "%s/%i: ALSA support for cx2388x boards\n",
773                card->driver,devno);
774
775         err = snd_card_register(card);
776         if (err < 0) {
777                 snd_card_free(card);
778                 return (err);
779         }
780         snd_cx88_cards[devno] = card;
781
782         pci_set_drvdata(pci,card);
783
784         devno++;
785         return 0;
786 }
787 /*
788  * ALSA destructor
789  */
790 static void __devexit cx88_audio_finidev(struct pci_dev *pci)
791 {
792         struct cx88_audio_dev *card = pci_get_drvdata(pci);
793
794         snd_card_free((void *)card);
795
796         pci_set_drvdata(pci, NULL);
797
798         devno--;
799 }
800
801 /*
802  * PCI driver definition
803  */
804
805 static struct pci_driver cx88_audio_pci_driver = {
806         .name     = "cx88_audio",
807         .id_table = cx88_audio_pci_tbl,
808         .probe    = cx88_audio_initdev,
809         .remove   = cx88_audio_finidev,
810 };
811
812 /****************************************************************************
813                                 LINUX MODULE INIT
814  ****************************************************************************/
815
816 /*
817  * module init
818  */
819 static int cx88_audio_init(void)
820 {
821         printk(KERN_INFO "cx2388x alsa driver version %d.%d.%d loaded\n",
822                (CX88_VERSION_CODE >> 16) & 0xff,
823                (CX88_VERSION_CODE >>  8) & 0xff,
824                CX88_VERSION_CODE & 0xff);
825 #ifdef SNAPSHOT
826         printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
827                SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
828 #endif
829         return pci_register_driver(&cx88_audio_pci_driver);
830 }
831
832 /*
833  * module remove
834  */
835 static void cx88_audio_fini(void)
836 {
837
838         pci_unregister_driver(&cx88_audio_pci_driver);
839 }
840
841 module_init(cx88_audio_init);
842 module_exit(cx88_audio_fini);
843
844 /* ----------------------------------------------------------- */
845 /*
846  * Local variables:
847  * c-basic-offset: 8
848  * End:
849  */