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Merge with rsync://rsync.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git
[linux-2.6/kvm.git] / drivers / media / video / cx88 / cx88-alsa.c
blob3170b8f72c68e139de625d6f8838ea6ed8415e82
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@brturbo.com.br>
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@brturbo.com.br>");
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, status, mask);
236 /* risc op code error */
237 if (status & (1 << 16)) {
238 printk(KERN_WARNING "%s/0: audio risc op code error\n",core->name);
239 cx_clear(MO_AUD_DMACNTRL, 0x11);
240 cx88_sram_channel_dump(core, &cx88_sram_channels[SRAM_CH25]);
241 }
242
243 /* risc1 downstream */
244 if (status & 0x01) {
245 spin_lock(&chip->reg_lock);
246 count = cx_read(MO_AUDD_GPCNT);
247 spin_unlock(&chip->reg_lock);
248 if (chip->read_count == 0)
249 chip->read_count += chip->dma_size;
250 }
251
252 if (chip->read_count >= chip->period_size) {
253 dprintk(2, "Elapsing period\n");
254 snd_pcm_period_elapsed(chip->substream);
255 }
256
257 dprintk(3,"Leaving audio IRQ handler...\n");
258
259 /* FIXME: Any other status should deserve a special handling? */
260 }
261
262 /*
263 * BOARD Specific: Handles IRQ calls
264 */
265 static irqreturn_t cx8801_irq(int irq, void *dev_id, struct pt_regs *regs)
266 {
267 snd_cx88_card_t *chip = dev_id;
268 struct cx88_core *core = chip->core;
269 u32 status;
270 int loop, handled = 0;
271
272 for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
273 status = cx_read(MO_PCI_INTSTAT) & (core->pci_irqmask | 0x02);
274 if (0 == status)
275 goto out;
276 dprintk( 3, "cx8801_irq\n" );
277 dprintk( 3, " loop: %d/%d\n", loop, MAX_IRQ_LOOP );
278 dprintk( 3, " status: %d\n", status );
279 handled = 1;
280 cx_write(MO_PCI_INTSTAT, status);
281
282 if (status & 0x02)
283 {
284 dprintk( 2, " ALSA IRQ handling\n" );
285 cx8801_aud_irq(chip);
286 }
287 };
288
289 if (MAX_IRQ_LOOP == loop) {
290 dprintk( 0, "clearing mask\n" );
291 dprintk(1,"%s/0: irq loop -- clearing mask\n",
292 core->name);
293 cx_clear(MO_PCI_INTMSK,0x02);
294 }
295
296 out:
297 return IRQ_RETVAL(handled);
298 }
299
300
301 static int dsp_buffer_free(snd_cx88_card_t *chip)
302 {
303 BUG_ON(!chip->dma_size);
304
305 dprintk(2,"Freeing buffer\n");
306 videobuf_dma_pci_unmap(chip->pci, &chip->dma_risc);
307 videobuf_dma_free(&chip->dma_risc);
308 btcx_riscmem_free(chip->pci,&chip->buf->risc);
309 kfree(chip->buf);
310
311 chip->dma_size = 0;
312
313 return 0;
314 }
315
316 /****************************************************************************
317 ALSA PCM Interface
318 ****************************************************************************/
319
320 /*
321 * Digital hardware definition
322 */
323 static struct snd_pcm_hardware snd_cx88_digital_hw = {
324 .info = SNDRV_PCM_INFO_MMAP |
325 SNDRV_PCM_INFO_INTERLEAVED |
326 SNDRV_PCM_INFO_BLOCK_TRANSFER |
327 SNDRV_PCM_INFO_MMAP_VALID,
328 .formats = SNDRV_PCM_FMTBIT_S16_LE,
329
330 .rates = SNDRV_PCM_RATE_48000,
331 .rate_min = 48000,
332 .rate_max = 48000,
333 .channels_min = 1,
334 .channels_max = 2,
335 .buffer_bytes_max = (2*2048),
336 .period_bytes_min = 2048,
337 .period_bytes_max = 2048,
338 .periods_min = 2,
339 .periods_max = 2,
340 };
341
342 /*
343 * audio pcm capture runtime free
344 */
345 static void snd_card_cx88_runtime_free(struct snd_pcm_runtime *runtime)
346 {
347 }
348 /*
349 * audio pcm capture open callback
350 */
351 static int snd_cx88_pcm_open(struct snd_pcm_substream *substream)
352 {
353 snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
354 struct snd_pcm_runtime *runtime = substream->runtime;
355 int err;
356
357 if (test_and_set_bit(0, &chip->opened))
358 return -EBUSY;
359
360 err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
361 if (err < 0)
362 goto _error;
363
364 chip->substream = substream;
365
366 chip->read_count = 0;
367 chip->read_offset = 0;
368
369 runtime->private_free = snd_card_cx88_runtime_free;
370 runtime->hw = snd_cx88_digital_hw;
371
372 return 0;
373 _error:
374 dprintk(1,"Error opening PCM!\n");
375 clear_bit(0, &chip->opened);
376 smp_mb__after_clear_bit();
377 return err;
378 }
379
380 /*
381 * audio close callback
382 */
383 static int snd_cx88_close(struct snd_pcm_substream *substream)
384 {
385 snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
386
387 clear_bit(0, &chip->opened);
388 smp_mb__after_clear_bit();
389
390 return 0;
391 }
392
393 /*
394 * hw_params callback
395 */
396 static int snd_cx88_hw_params(struct snd_pcm_substream * substream,
397 struct snd_pcm_hw_params * hw_params)
398 {
399 snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
400 struct cx88_buffer *buf;
401
402 if (substream->runtime->dma_area) {
403 dsp_buffer_free(chip);
404 substream->runtime->dma_area = NULL;
405 }
406
407
408 chip->period_size = params_period_bytes(hw_params);
409 chip->num_periods = params_periods(hw_params);
410 chip->dma_size = chip->period_size * params_periods(hw_params);
411
412 BUG_ON(!chip->dma_size);
413
414 dprintk(1,"Setting buffer\n");
415
416 buf = kmalloc(sizeof(*buf),GFP_KERNEL);
417 if (NULL == buf)
418 return -ENOMEM;
419 memset(buf,0,sizeof(*buf));
420
421
422 buf->vb.memory = V4L2_MEMORY_MMAP;
423 buf->vb.width = chip->period_size;
424 buf->vb.height = chip->num_periods;
425 buf->vb.size = chip->dma_size;
426 buf->vb.field = V4L2_FIELD_NONE;
427
428 videobuf_dma_init(&buf->vb.dma);
429 videobuf_dma_init_kernel(&buf->vb.dma,PCI_DMA_FROMDEVICE,
430 (PAGE_ALIGN(buf->vb.size) >> PAGE_SHIFT));
431
432 videobuf_dma_pci_map(chip->pci,&buf->vb.dma);
433
434
435 cx88_risc_databuffer(chip->pci, &buf->risc,
436 buf->vb.dma.sglist,
437 buf->vb.width, buf->vb.height);
438
439 buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
440 buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
441
442 buf->vb.state = STATE_PREPARED;
443
444 buf->bpl = chip->period_size;
445 chip->buf = buf;
446 chip->dma_risc = buf->vb.dma;
447
448 dprintk(1,"Buffer ready at %u\n",chip->dma_risc.nr_pages);
449 substream->runtime->dma_area = chip->dma_risc.vmalloc;
450 return 0;
451 }
452
453 /*
454 * hw free callback
455 */
456 static int snd_cx88_hw_free(struct snd_pcm_substream * substream)
457 {
458
459 snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
460
461 if (substream->runtime->dma_area) {
462 dsp_buffer_free(chip);
463 substream->runtime->dma_area = NULL;
464 }
465
466 return 0;
467 }
468
469 /*
470 * prepare callback
471 */
472 static int snd_cx88_prepare(struct snd_pcm_substream *substream)
473 {
474 return 0;
475 }
476
477
478 /*
479 * trigger callback
480 */
481 static int snd_cx88_card_trigger(struct snd_pcm_substream *substream, int cmd)
482 {
483 snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
484 int err;
485
486 spin_lock(&chip->reg_lock);
487
488 switch (cmd) {
489 case SNDRV_PCM_TRIGGER_START:
490 err=_cx88_start_audio_dma(chip);
491 break;
492 case SNDRV_PCM_TRIGGER_STOP:
493 err=_cx88_stop_audio_dma(chip);
494 break;
495 default:
496 err=-EINVAL;
497 break;
498 }
499
500 spin_unlock(&chip->reg_lock);
501
502 return err;
503 }
504
505 /*
506 * pointer callback
507 */
508 static snd_pcm_uframes_t snd_cx88_pointer(struct snd_pcm_substream *substream)
509 {
510 snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
511 struct snd_pcm_runtime *runtime = substream->runtime;
512
513 if (chip->read_count) {
514 chip->read_count -= snd_pcm_lib_period_bytes(substream);
515 chip->read_offset += snd_pcm_lib_period_bytes(substream);
516 if (chip->read_offset == chip->dma_size)
517 chip->read_offset = 0;
518 }
519
520 dprintk(2, "Pointer time, will return %li, read %li\n",chip->read_offset,chip->read_count);
521 return bytes_to_frames(runtime, chip->read_offset);
522
523 }
524
525 /*
526 * operators
527 */
528 static struct snd_pcm_ops snd_cx88_pcm_ops = {
529 .open = snd_cx88_pcm_open,
530 .close = snd_cx88_close,
531 .ioctl = snd_pcm_lib_ioctl,
532 .hw_params = snd_cx88_hw_params,
533 .hw_free = snd_cx88_hw_free,
534 .prepare = snd_cx88_prepare,
535 .trigger = snd_cx88_card_trigger,
536 .pointer = snd_cx88_pointer,
537 };
538
539 /*
540 * create a PCM device
541 */
542 static int __devinit snd_cx88_pcm(snd_cx88_card_t *chip, int device, char *name)
543 {
544 int err;
545 struct snd_pcm *pcm;
546
547 err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm);
548 if (err < 0)
549 return err;
550 pcm->private_data = chip;
551 strcpy(pcm->name, name);
552 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cx88_pcm_ops);
553
554 return 0;
555 }
556
557 /****************************************************************************
558 CONTROL INTERFACE
559 ****************************************************************************/
560 static int snd_cx88_capture_volume_info(struct snd_kcontrol *kcontrol,
561 struct snd_ctl_elem_info *info)
562 {
563 info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
564 info->count = 1;
565 info->value.integer.min = 0;
566 info->value.integer.max = 0x3f;
567
568 return 0;
569 }
570
571 /* OK - TODO: test it */
572 static int snd_cx88_capture_volume_get(struct snd_kcontrol *kcontrol,
573 struct snd_ctl_elem_value *value)
574 {
575 snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
576 struct cx88_core *core=chip->core;
577
578 value->value.integer.value[0] = 0x3f - (cx_read(AUD_VOL_CTL) & 0x3f);
579
580 return 0;
581 }
582
583 /* OK - TODO: test it */
584 static int snd_cx88_capture_volume_put(struct snd_kcontrol *kcontrol,
585 struct snd_ctl_elem_value *value)
586 {
587 snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
588 struct cx88_core *core=chip->core;
589 int v;
590 u32 old_control;
591
592 spin_lock_irq(&chip->reg_lock);
593 old_control = 0x3f - (cx_read(AUD_VOL_CTL) & 0x3f);
594 v = 0x3f - (value->value.integer.value[0] & 0x3f);
595 cx_andor(AUD_VOL_CTL, 0x3f, v);
596 spin_unlock_irq(&chip->reg_lock);
597
598 return v != old_control;
599 }
600
601 static struct snd_kcontrol_new snd_cx88_capture_volume = {
602 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
603 .name = "Capture Volume",
604 .info = snd_cx88_capture_volume_info,
605 .get = snd_cx88_capture_volume_get,
606 .put = snd_cx88_capture_volume_put,
607 };
608
609
610 /****************************************************************************
611 Basic Flow for Sound Devices
612 ****************************************************************************/
613
614 /*
615 * PCI ID Table - 14f1:8801 and 14f1:8811 means function 1: Audio
616 * Only boards with eeprom and byte 1 at eeprom=1 have it
617 */
618
619 static struct pci_device_id cx88_audio_pci_tbl[] = {
620 {0x14f1,0x8801,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
621 {0x14f1,0x8811,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
622 {0, }
623 };
624 MODULE_DEVICE_TABLE(pci, cx88_audio_pci_tbl);
625
626 /*
627 * Chip-specific destructor
628 */
629
630 static int snd_cx88_free(snd_cx88_card_t *chip)
631 {
632
633 if (chip->irq >= 0){
634 synchronize_irq(chip->irq);
635 free_irq(chip->irq, chip);
636 }
637
638 cx88_core_put(chip->core,chip->pci);
639
640 pci_disable_device(chip->pci);
641 return 0;
642 }
643
644 /*
645 * Component Destructor
646 */
647 static void snd_cx88_dev_free(struct snd_card * card)
648 {
649 snd_cx88_card_t *chip = card->private_data;
650
651 snd_cx88_free(chip);
652 }
653
654
655 /*
656 * Alsa Constructor - Component probe
657 */
658
659 static int devno;
660 static int __devinit snd_cx88_create(struct snd_card *card,
661 struct pci_dev *pci,
662 snd_cx88_card_t **rchip)
663 {
664 snd_cx88_card_t *chip;
665 struct cx88_core *core;
666 int err;
667
668 *rchip = NULL;
669
670 err = pci_enable_device(pci);
671 if (err < 0)
672 return err;
673
674 pci_set_master(pci);
675
676 chip = (snd_cx88_card_t *) card->private_data;
677
678 core = cx88_core_get(pci);
679 if (NULL == core) {
680 err = -EINVAL;
681 kfree (chip);
682 return err;
683 }
684
685 if (!pci_dma_supported(pci,0xffffffff)) {
686 dprintk(0, "%s/1: Oops: no 32bit PCI DMA ???\n",core->name);
687 err = -EIO;
688 cx88_core_put(core,pci);
689 return err;
690 }
691
692
693 /* pci init */
694 chip->card = card;
695 chip->pci = pci;
696 chip->irq = -1;
697 spin_lock_init(&chip->reg_lock);
698
699 cx88_reset(core);
700 chip->core = core;
701
702 /* get irq */
703 err = request_irq(chip->pci->irq, cx8801_irq,
704 SA_SHIRQ | SA_INTERRUPT, chip->core->name, chip);
705 if (err < 0) {
706 dprintk(0, "%s: can't get IRQ %d\n",
707 chip->core->name, chip->pci->irq);
708 return err;
709 }
710
711 /* print pci info */
712 pci_read_config_byte(pci, PCI_CLASS_REVISION, &chip->pci_rev);
713 pci_read_config_byte(pci, PCI_LATENCY_TIMER, &chip->pci_lat);
714
715 dprintk(1,"ALSA %s/%i: found at %s, rev: %d, irq: %d, "
716 "latency: %d, mmio: 0x%lx\n", core->name, devno,
717 pci_name(pci), chip->pci_rev, pci->irq,
718 chip->pci_lat,pci_resource_start(pci,0));
719
720 chip->irq = pci->irq;
721 synchronize_irq(chip->irq);
722
723 snd_card_set_dev(card, &pci->dev);
724
725 *rchip = chip;
726
727 return 0;
728 }
729
730 static int __devinit cx88_audio_initdev(struct pci_dev *pci,
731 const struct pci_device_id *pci_id)
732 {
733 struct snd_card *card;
734 snd_cx88_card_t *chip;
735 int err;
736
737 if (devno >= SNDRV_CARDS)
738 return (-ENODEV);
739
740 if (!enable[devno]) {
741 ++devno;
742 return (-ENOENT);
743 }
744
745 card = snd_card_new(index[devno], id[devno], THIS_MODULE, sizeof(snd_cx88_card_t));
746 if (!card)
747 return (-ENOMEM);
748
749 card->private_free = snd_cx88_dev_free;
750
751 err = snd_cx88_create(card, pci, &chip);
752 if (err < 0)
753 return (err);
754
755 err = snd_cx88_pcm(chip, 0, "CX88 Digital");
756
757 if (err < 0) {
758 snd_card_free(card);
759 return (err);
760 }
761
762 err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_capture_volume, chip));
763 if (err < 0) {
764 snd_card_free(card);
765 return (err);
766 }
767
768 strcpy (card->driver, "CX88x");
769 sprintf(card->shortname, "Conexant CX%x", pci->device);
770 sprintf(card->longname, "%s at %#lx",
771 card->shortname, pci_resource_start(pci, 0));
772 strcpy (card->mixername, "CX88");
773
774 dprintk (0, "%s/%i: ALSA support for cx2388x boards\n",
775 card->driver,devno);
776
777 err = snd_card_register(card);
778 if (err < 0) {
779 snd_card_free(card);
780 return (err);
781 }
782 snd_cx88_cards[devno] = card;
783
784 pci_set_drvdata(pci,card);
785
786 devno++;
787 return 0;
788 }
789 /*
790 * ALSA destructor
791 */
792 static void __devexit cx88_audio_finidev(struct pci_dev *pci)
793 {
794 struct cx88_audio_dev *card = pci_get_drvdata(pci);
795
796 snd_card_free((void *)card);
797
798 pci_set_drvdata(pci, NULL);
799
800 devno--;
801 }
802
803 /*
804 * PCI driver definition
805 */
806
807 static struct pci_driver cx88_audio_pci_driver = {
808 .name = "cx88_audio",
809 .id_table = cx88_audio_pci_tbl,
810 .probe = cx88_audio_initdev,
811 .remove = cx88_audio_finidev,
812 };
813
814 /****************************************************************************
815 LINUX MODULE INIT
816 ****************************************************************************/
817
818 /*
819 * module init
820 */
821 static int cx88_audio_init(void)
822 {
823 printk(KERN_INFO "cx2388x alsa driver version %d.%d.%d loaded\n",
824 (CX88_VERSION_CODE >> 16) & 0xff,
825 (CX88_VERSION_CODE >> 8) & 0xff,
826 CX88_VERSION_CODE & 0xff);
827 #ifdef SNAPSHOT
828 printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
829 SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
830 #endif
831 return pci_register_driver(&cx88_audio_pci_driver);
832 }
833
834 /*
835 * module remove
836 */
837 static void cx88_audio_fini(void)
838 {
839
840 pci_unregister_driver(&cx88_audio_pci_driver);
841 }
842
843 module_init(cx88_audio_init);
844 module_exit(cx88_audio_fini);
845
846 /* ----------------------------------------------------------- */
847 /*
848 * Local variables:
849 * c-basic-offset: 8
850 * End:
851 */
kernel-based virtual machine