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V4L/DVB (6067): cx88-alsa: Hardware doesn't support mono audio
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / media / video / cx88 / cx88-alsa.c
blob3e293da0f70b6bc72d33839e51311f4efb0a2582
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 <linux/dma-mapping.h>
31
32 #include <asm/delay.h>
33 #include <sound/driver.h>
34 #include <sound/core.h>
35 #include <sound/pcm.h>
36 #include <sound/pcm_params.h>
37 #include <sound/control.h>
38 #include <sound/initval.h>
39
40 #include "cx88.h"
41 #include "cx88-reg.h"
42
43 #define dprintk(level,fmt, arg...) if (debug >= level) \
44 printk(KERN_INFO "%s/1: " fmt, chip->core->name , ## arg)
45
46 #define dprintk_core(level,fmt, arg...) if (debug >= level) \
47 printk(KERN_DEBUG "%s/1: " fmt, chip->core->name , ## arg)
48
49
50 /****************************************************************************
51 Data type declarations - Can be moded to a header file later
52 ****************************************************************************/
53
54 /* These can be replaced after done */
55 #define MIXER_ADDR_LAST MAX_CX88_INPUT
56
57 struct cx88_audio_dev {
58 struct cx88_core *core;
59 struct cx88_dmaqueue q;
60
61 /* pci i/o */
62 struct pci_dev *pci;
63 unsigned char pci_rev,pci_lat;
64
65 /* audio controls */
66 int irq;
67
68 struct snd_card *card;
69
70 spinlock_t reg_lock;
71
72 unsigned int dma_size;
73 unsigned int period_size;
74 unsigned int num_periods;
75
76 struct videobuf_dmabuf dma_risc;
77
78 int mixer_volume[MIXER_ADDR_LAST+1][2];
79 int capture_source[MIXER_ADDR_LAST+1][2];
80
81 long int read_count;
82 long int read_offset;
83
84 struct cx88_buffer *buf;
85
86 long opened;
87 struct snd_pcm_substream *substream;
88
89 };
90 typedef struct cx88_audio_dev snd_cx88_card_t;
91
92
93
94 /****************************************************************************
95 Module global static vars
96 ****************************************************************************/
97
98 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
99 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
100 static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 1};
101 static struct snd_card *snd_cx88_cards[SNDRV_CARDS];
102
103 module_param_array(enable, bool, NULL, 0444);
104 MODULE_PARM_DESC(enable, "Enable cx88x soundcard. default enabled.");
105
106 module_param_array(index, int, NULL, 0444);
107 MODULE_PARM_DESC(index, "Index value for cx88x capture interface(s).");
108
109
110 /****************************************************************************
111 Module macros
112 ****************************************************************************/
113
114 MODULE_DESCRIPTION("ALSA driver module for cx2388x based TV cards");
115 MODULE_AUTHOR("Ricardo Cerqueira");
116 MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
117 MODULE_LICENSE("GPL");
118 MODULE_SUPPORTED_DEVICE("{{Conexant,23881},"
119 "{{Conexant,23882},"
120 "{{Conexant,23883}");
121 static unsigned int debug;
122 module_param(debug,int,0644);
123 MODULE_PARM_DESC(debug,"enable debug messages");
124
125 /****************************************************************************
126 Module specific funtions
127 ****************************************************************************/
128
129 /*
130 * BOARD Specific: Sets audio DMA
131 */
132
133 static int _cx88_start_audio_dma(snd_cx88_card_t *chip)
134 {
135 struct cx88_buffer *buf = chip->buf;
136 struct cx88_core *core=chip->core;
137 struct sram_channel *audio_ch = &cx88_sram_channels[SRAM_CH25];
138
139 /* Make sure RISC/FIFO are off before changing FIFO/RISC settings */
140 cx_clear(MO_AUD_DMACNTRL, 0x11);
141
142 /* setup fifo + format - out channel */
143 cx88_sram_channel_setup(chip->core, audio_ch, buf->bpl, buf->risc.dma);
144
145 /* sets bpl size */
146 cx_write(MO_AUDD_LNGTH, buf->bpl);
147
148 /* reset counter */
149 cx_write(MO_AUDD_GPCNTRL,GP_COUNT_CONTROL_RESET);
150
151 dprintk(1, "Start audio DMA, %d B/line, %d lines/FIFO, %d lines/irq, "
152 "%d B/irq\n", buf->bpl, cx_read(audio_ch->cmds_start + 8)>>1,
153 chip->num_periods, buf->bpl * chip->num_periods);
154
155 dprintk(1, "Enabling IRQ, setting mask from 0x%x to 0x%x\n",
156 chip->core->pci_irqmask,
157 chip->core->pci_irqmask | PCI_INT_AUDINT);
158
159 /* Enables corresponding bits at AUD_INT_STAT */
160 cx_write(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC |
161 AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1);
162
163 /* Clean any pending interrupt bits already set */
164 cx_write(MO_AUD_INTSTAT, ~0);
165
166 /* enable audio irqs */
167 cx_set(MO_PCI_INTMSK, chip->core->pci_irqmask | PCI_INT_AUDINT);
168
169 /* start dma */
170 cx_set(MO_DEV_CNTRL2, (1<<5)); /* Enables Risc Processor */
171 cx_set(MO_AUD_DMACNTRL, 0x11); /* audio downstream FIFO and RISC enable */
172
173 if (debug)
174 cx88_sram_channel_dump(chip->core, audio_ch);
175
176 return 0;
177 }
178
179 /*
180 * BOARD Specific: Resets audio DMA
181 */
182 static int _cx88_stop_audio_dma(snd_cx88_card_t *chip)
183 {
184 struct cx88_core *core=chip->core;
185 dprintk(1, "Stopping audio DMA\n");
186
187 /* stop dma */
188 cx_clear(MO_AUD_DMACNTRL, 0x11);
189
190 /* disable irqs */
191 cx_clear(MO_PCI_INTMSK, PCI_INT_AUDINT);
192 cx_clear(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC |
193 AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1);
194
195 if (debug)
196 cx88_sram_channel_dump(chip->core, &cx88_sram_channels[SRAM_CH25]);
197
198 return 0;
199 }
200
201 #define MAX_IRQ_LOOP 10
202
203 /*
204 * BOARD Specific: IRQ dma bits
205 */
206 static char *cx88_aud_irqs[32] = {
207 "dn_risci1", "up_risci1", "rds_dn_risc1", /* 0-2 */
208 NULL, /* reserved */
209 "dn_risci2", "up_risci2", "rds_dn_risc2", /* 4-6 */
210 NULL, /* reserved */
211 "dnf_of", "upf_uf", "rds_dnf_uf", /* 8-10 */
212 NULL, /* reserved */
213 "dn_sync", "up_sync", "rds_dn_sync", /* 12-14 */
214 NULL, /* reserved */
215 "opc_err", "par_err", "rip_err", /* 16-18 */
216 "pci_abort", "ber_irq", "mchg_irq" /* 19-21 */
217 };
218
219 /*
220 * BOARD Specific: Threats IRQ audio specific calls
221 */
222 static void cx8801_aud_irq(snd_cx88_card_t *chip)
223 {
224 struct cx88_core *core = chip->core;
225 u32 status, mask;
226 u32 count;
227
228 status = cx_read(MO_AUD_INTSTAT);
229 mask = cx_read(MO_AUD_INTMSK);
230 if (0 == (status & mask)) {
231 spin_unlock(&chip->reg_lock);
232 return;
233 }
234 cx_write(MO_AUD_INTSTAT, status);
235 if (debug > 1 || (status & mask & ~0xff))
236 cx88_print_irqbits(core->name, "irq aud",
237 cx88_aud_irqs, ARRAY_SIZE(cx88_aud_irqs),
238 status, mask);
239 /* risc op code error */
240 if (status & AUD_INT_OPC_ERR) {
241 printk(KERN_WARNING "%s/0: audio risc op code error\n",core->name);
242 cx_clear(MO_AUD_DMACNTRL, 0x11);
243 cx88_sram_channel_dump(core, &cx88_sram_channels[SRAM_CH25]);
244 }
245
246 /* risc1 downstream */
247 if (status & AUD_INT_DN_RISCI1) {
248 spin_lock(&chip->reg_lock);
249 count = cx_read(MO_AUDD_GPCNT);
250 spin_unlock(&chip->reg_lock);
251 if (chip->read_count == 0)
252 chip->read_count += chip->dma_size;
253 }
254
255 if (chip->read_count >= chip->period_size) {
256 dprintk(2, "Elapsing period\n");
257 snd_pcm_period_elapsed(chip->substream);
258 }
259
260 dprintk(3,"Leaving audio IRQ handler...\n");
261
262 /* FIXME: Any other status should deserve a special handling? */
263 }
264
265 /*
266 * BOARD Specific: Handles IRQ calls
267 */
268 static irqreturn_t cx8801_irq(int irq, void *dev_id)
269 {
270 snd_cx88_card_t *chip = dev_id;
271 struct cx88_core *core = chip->core;
272 u32 status;
273 int loop, handled = 0;
274
275 for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
276 status = cx_read(MO_PCI_INTSTAT) &
277 (core->pci_irqmask | PCI_INT_AUDINT);
278 if (0 == status)
279 goto out;
280 dprintk( 3, "cx8801_irq\n" );
281 dprintk( 3, " loop: %d/%d\n", loop, MAX_IRQ_LOOP );
282 dprintk( 3, " status: %d\n", status );
283 handled = 1;
284 cx_write(MO_PCI_INTSTAT, status);
285
286 if (status & core->pci_irqmask)
287 cx88_core_irq(core, status);
288 if (status & PCI_INT_AUDINT) {
289 dprintk( 2, " ALSA IRQ handling\n" );
290 cx8801_aud_irq(chip);
291 }
292 };
293
294 if (MAX_IRQ_LOOP == loop) {
295 dprintk( 0, "clearing mask\n" );
296 dprintk(1,"%s/0: irq loop -- clearing mask\n",
297 core->name);
298 cx_clear(MO_PCI_INTMSK, PCI_INT_AUDINT);
299 }
300
301 out:
302 return IRQ_RETVAL(handled);
303 }
304
305
306 static int dsp_buffer_free(snd_cx88_card_t *chip)
307 {
308 BUG_ON(!chip->dma_size);
309
310 dprintk(2,"Freeing buffer\n");
311 videobuf_pci_dma_unmap(chip->pci, &chip->dma_risc);
312 videobuf_dma_free(&chip->dma_risc);
313 btcx_riscmem_free(chip->pci,&chip->buf->risc);
314 kfree(chip->buf);
315
316 chip->dma_size = 0;
317
318 return 0;
319 }
320
321 /****************************************************************************
322 ALSA PCM Interface
323 ****************************************************************************/
324
325 /*
326 * Digital hardware definition
327 */
328 static struct snd_pcm_hardware snd_cx88_digital_hw = {
329 .info = SNDRV_PCM_INFO_MMAP |
330 SNDRV_PCM_INFO_INTERLEAVED |
331 SNDRV_PCM_INFO_BLOCK_TRANSFER |
332 SNDRV_PCM_INFO_MMAP_VALID,
333 .formats = SNDRV_PCM_FMTBIT_S16_LE,
334
335 .rates = SNDRV_PCM_RATE_48000,
336 .rate_min = 48000,
337 .rate_max = 48000,
338 .channels_min = 2,
339 .channels_max = 2,
340 .buffer_bytes_max = (2*2048),
341 .period_bytes_min = 2048,
342 .period_bytes_max = 2048,
343 .periods_min = 2,
344 .periods_max = 2,
345 };
346
347 /*
348 * audio pcm capture runtime free
349 */
350 static void snd_card_cx88_runtime_free(struct snd_pcm_runtime *runtime)
351 {
352 }
353 /*
354 * audio pcm capture open callback
355 */
356 static int snd_cx88_pcm_open(struct snd_pcm_substream *substream)
357 {
358 snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
359 struct snd_pcm_runtime *runtime = substream->runtime;
360 int err;
361
362 if (test_and_set_bit(0, &chip->opened))
363 return -EBUSY;
364
365 err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
366 if (err < 0)
367 goto _error;
368
369 chip->substream = substream;
370
371 chip->read_count = 0;
372 chip->read_offset = 0;
373
374 runtime->private_free = snd_card_cx88_runtime_free;
375 runtime->hw = snd_cx88_digital_hw;
376
377 return 0;
378 _error:
379 dprintk(1,"Error opening PCM!\n");
380 clear_bit(0, &chip->opened);
381 smp_mb__after_clear_bit();
382 return err;
383 }
384
385 /*
386 * audio close callback
387 */
388 static int snd_cx88_close(struct snd_pcm_substream *substream)
389 {
390 snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
391
392 clear_bit(0, &chip->opened);
393 smp_mb__after_clear_bit();
394
395 return 0;
396 }
397
398 /*
399 * hw_params callback
400 */
401 static int snd_cx88_hw_params(struct snd_pcm_substream * substream,
402 struct snd_pcm_hw_params * hw_params)
403 {
404 snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
405 struct cx88_buffer *buf;
406
407 if (substream->runtime->dma_area) {
408 dsp_buffer_free(chip);
409 substream->runtime->dma_area = NULL;
410 }
411
412
413 chip->period_size = params_period_bytes(hw_params);
414 chip->num_periods = params_periods(hw_params);
415 chip->dma_size = chip->period_size * params_periods(hw_params);
416
417 BUG_ON(!chip->dma_size);
418
419 dprintk(1,"Setting buffer\n");
420
421 buf = kzalloc(sizeof(*buf),GFP_KERNEL);
422 if (NULL == buf)
423 return -ENOMEM;
424
425 buf->vb.memory = V4L2_MEMORY_MMAP;
426 buf->vb.width = chip->period_size;
427 buf->vb.height = chip->num_periods;
428 buf->vb.size = chip->dma_size;
429 buf->vb.field = V4L2_FIELD_NONE;
430
431 videobuf_dma_init(&buf->vb.dma);
432 videobuf_dma_init_kernel(&buf->vb.dma,PCI_DMA_FROMDEVICE,
433 (PAGE_ALIGN(buf->vb.size) >> PAGE_SHIFT));
434
435 videobuf_pci_dma_map(chip->pci,&buf->vb.dma);
436
437
438 cx88_risc_databuffer(chip->pci, &buf->risc,
439 buf->vb.dma.sglist,
440 buf->vb.width, buf->vb.height);
441
442 buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
443 buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
444
445 buf->vb.state = STATE_PREPARED;
446
447 buf->bpl = chip->period_size;
448 chip->buf = buf;
449 chip->dma_risc = buf->vb.dma;
450
451 dprintk(1,"Buffer ready at %u\n",chip->dma_risc.nr_pages);
452 substream->runtime->dma_area = chip->dma_risc.vmalloc;
453 return 0;
454 }
455
456 /*
457 * hw free callback
458 */
459 static int snd_cx88_hw_free(struct snd_pcm_substream * substream)
460 {
461
462 snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
463
464 if (substream->runtime->dma_area) {
465 dsp_buffer_free(chip);
466 substream->runtime->dma_area = NULL;
467 }
468
469 return 0;
470 }
471
472 /*
473 * prepare callback
474 */
475 static int snd_cx88_prepare(struct snd_pcm_substream *substream)
476 {
477 return 0;
478 }
479
480
481 /*
482 * trigger callback
483 */
484 static int snd_cx88_card_trigger(struct snd_pcm_substream *substream, int cmd)
485 {
486 snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
487 int err;
488
489 spin_lock(&chip->reg_lock);
490
491 switch (cmd) {
492 case SNDRV_PCM_TRIGGER_START:
493 err=_cx88_start_audio_dma(chip);
494 break;
495 case SNDRV_PCM_TRIGGER_STOP:
496 err=_cx88_stop_audio_dma(chip);
497 break;
498 default:
499 err=-EINVAL;
500 break;
501 }
502
503 spin_unlock(&chip->reg_lock);
504
505 return err;
506 }
507
508 /*
509 * pointer callback
510 */
511 static snd_pcm_uframes_t snd_cx88_pointer(struct snd_pcm_substream *substream)
512 {
513 snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
514 struct snd_pcm_runtime *runtime = substream->runtime;
515
516 if (chip->read_count) {
517 chip->read_count -= snd_pcm_lib_period_bytes(substream);
518 chip->read_offset += snd_pcm_lib_period_bytes(substream);
519 if (chip->read_offset == chip->dma_size)
520 chip->read_offset = 0;
521 }
522
523 dprintk(2, "Pointer time, will return %li, read %li\n",chip->read_offset,chip->read_count);
524 return bytes_to_frames(runtime, chip->read_offset);
525
526 }
527
528 /*
529 * operators
530 */
531 static struct snd_pcm_ops snd_cx88_pcm_ops = {
532 .open = snd_cx88_pcm_open,
533 .close = snd_cx88_close,
534 .ioctl = snd_pcm_lib_ioctl,
535 .hw_params = snd_cx88_hw_params,
536 .hw_free = snd_cx88_hw_free,
537 .prepare = snd_cx88_prepare,
538 .trigger = snd_cx88_card_trigger,
539 .pointer = snd_cx88_pointer,
540 };
541
542 /*
543 * create a PCM device
544 */
545 static int __devinit snd_cx88_pcm(snd_cx88_card_t *chip, int device, char *name)
546 {
547 int err;
548 struct snd_pcm *pcm;
549
550 err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm);
551 if (err < 0)
552 return err;
553 pcm->private_data = chip;
554 strcpy(pcm->name, name);
555 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cx88_pcm_ops);
556
557 return 0;
558 }
559
560 /****************************************************************************
561 CONTROL INTERFACE
562 ****************************************************************************/
563 static int snd_cx88_capture_volume_info(struct snd_kcontrol *kcontrol,
564 struct snd_ctl_elem_info *info)
565 {
566 info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
567 info->count = 1;
568 info->value.integer.min = 0;
569 info->value.integer.max = 0x3f;
570
571 return 0;
572 }
573
574 /* OK - TODO: test it */
575 static int snd_cx88_capture_volume_get(struct snd_kcontrol *kcontrol,
576 struct snd_ctl_elem_value *value)
577 {
578 snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
579 struct cx88_core *core=chip->core;
580
581 value->value.integer.value[0] = 0x3f - (cx_read(AUD_VOL_CTL) & 0x3f);
582
583 return 0;
584 }
585
586 /* OK - TODO: test it */
587 static int snd_cx88_capture_volume_put(struct snd_kcontrol *kcontrol,
588 struct snd_ctl_elem_value *value)
589 {
590 snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
591 struct cx88_core *core=chip->core;
592 int v;
593 u32 old_control;
594
595 spin_lock_irq(&chip->reg_lock);
596 old_control = 0x3f - (cx_read(AUD_VOL_CTL) & 0x3f);
597 v = 0x3f - (value->value.integer.value[0] & 0x3f);
598 cx_andor(AUD_VOL_CTL, 0x3f, v);
599 spin_unlock_irq(&chip->reg_lock);
600
601 return v != old_control;
602 }
603
604 static struct snd_kcontrol_new snd_cx88_capture_volume = {
605 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
606 .name = "Capture Volume",
607 .info = snd_cx88_capture_volume_info,
608 .get = snd_cx88_capture_volume_get,
609 .put = snd_cx88_capture_volume_put,
610 };
611
612
613 /****************************************************************************
614 Basic Flow for Sound Devices
615 ****************************************************************************/
616
617 /*
618 * PCI ID Table - 14f1:8801 and 14f1:8811 means function 1: Audio
619 * Only boards with eeprom and byte 1 at eeprom=1 have it
620 */
621
622 static struct pci_device_id cx88_audio_pci_tbl[] __devinitdata = {
623 {0x14f1,0x8801,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
624 {0x14f1,0x8811,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
625 {0, }
626 };
627 MODULE_DEVICE_TABLE(pci, cx88_audio_pci_tbl);
628
629 /*
630 * Chip-specific destructor
631 */
632
633 static int snd_cx88_free(snd_cx88_card_t *chip)
634 {
635
636 if (chip->irq >= 0){
637 synchronize_irq(chip->irq);
638 free_irq(chip->irq, chip);
639 }
640
641 cx88_core_put(chip->core,chip->pci);
642
643 pci_disable_device(chip->pci);
644 return 0;
645 }
646
647 /*
648 * Component Destructor
649 */
650 static void snd_cx88_dev_free(struct snd_card * card)
651 {
652 snd_cx88_card_t *chip = card->private_data;
653
654 snd_cx88_free(chip);
655 }
656
657
658 /*
659 * Alsa Constructor - Component probe
660 */
661
662 static int devno;
663 static int __devinit snd_cx88_create(struct snd_card *card,
664 struct pci_dev *pci,
665 snd_cx88_card_t **rchip)
666 {
667 snd_cx88_card_t *chip;
668 struct cx88_core *core;
669 int err;
670
671 *rchip = NULL;
672
673 err = pci_enable_device(pci);
674 if (err < 0)
675 return err;
676
677 pci_set_master(pci);
678
679 chip = (snd_cx88_card_t *) card->private_data;
680
681 core = cx88_core_get(pci);
682 if (NULL == core) {
683 err = -EINVAL;
684 kfree (chip);
685 return err;
686 }
687
688 if (!pci_dma_supported(pci,DMA_32BIT_MASK)) {
689 dprintk(0, "%s/1: Oops: no 32bit PCI DMA ???\n",core->name);
690 err = -EIO;
691 cx88_core_put(core,pci);
692 return err;
693 }
694
695
696 /* pci init */
697 chip->card = card;
698 chip->pci = pci;
699 chip->irq = -1;
700 spin_lock_init(&chip->reg_lock);
701
702 chip->core = core;
703
704 /* get irq */
705 err = request_irq(chip->pci->irq, cx8801_irq,
706 IRQF_SHARED | IRQF_DISABLED, chip->core->name, chip);
707 if (err < 0) {
708 dprintk(0, "%s: can't get IRQ %d\n",
709 chip->core->name, chip->pci->irq);
710 return err;
711 }
712
713 /* print pci info */
714 pci_read_config_byte(pci, PCI_CLASS_REVISION, &chip->pci_rev);
715 pci_read_config_byte(pci, PCI_LATENCY_TIMER, &chip->pci_lat);
716
717 dprintk(1,"ALSA %s/%i: found at %s, rev: %d, irq: %d, "
718 "latency: %d, mmio: 0x%llx\n", core->name, devno,
719 pci_name(pci), chip->pci_rev, pci->irq,
720 chip->pci_lat,(unsigned long long)pci_resource_start(pci,0));
721
722 chip->irq = pci->irq;
723 synchronize_irq(chip->irq);
724
725 snd_card_set_dev(card, &pci->dev);
726
727 *rchip = chip;
728
729 return 0;
730 }
731
732 static int __devinit cx88_audio_initdev(struct pci_dev *pci,
733 const struct pci_device_id *pci_id)
734 {
735 struct snd_card *card;
736 snd_cx88_card_t *chip;
737 int err;
738
739 if (devno >= SNDRV_CARDS)
740 return (-ENODEV);
741
742 if (!enable[devno]) {
743 ++devno;
744 return (-ENOENT);
745 }
746
747 card = snd_card_new(index[devno], id[devno], THIS_MODULE, sizeof(snd_cx88_card_t));
748 if (!card)
749 return (-ENOMEM);
750
751 card->private_free = snd_cx88_dev_free;
752
753 err = snd_cx88_create(card, pci, &chip);
754 if (err < 0)
755 return (err);
756
757 err = snd_cx88_pcm(chip, 0, "CX88 Digital");
758
759 if (err < 0) {
760 snd_card_free(card);
761 return (err);
762 }
763
764 err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_capture_volume, chip));
765 if (err < 0) {
766 snd_card_free(card);
767 return (err);
768 }
769
770 strcpy (card->driver, "CX88x");
771 sprintf(card->shortname, "Conexant CX%x", pci->device);
772 sprintf(card->longname, "%s at %#llx",
773 card->shortname,(unsigned long long)pci_resource_start(pci, 0));
774 strcpy (card->mixername, "CX88");
775
776 dprintk (0, "%s/%i: ALSA support for cx2388x boards\n",
777 card->driver,devno);
778
779 err = snd_card_register(card);
780 if (err < 0) {
781 snd_card_free(card);
782 return (err);
783 }
784 snd_cx88_cards[devno] = card;
785
786 pci_set_drvdata(pci,card);
787
788 devno++;
789 return 0;
790 }
791 /*
792 * ALSA destructor
793 */
794 static void __devexit cx88_audio_finidev(struct pci_dev *pci)
795 {
796 struct cx88_audio_dev *card = pci_get_drvdata(pci);
797
798 snd_card_free((void *)card);
799
800 pci_set_drvdata(pci, NULL);
801
802 devno--;
803 }
804
805 /*
806 * PCI driver definition
807 */
808
809 static struct pci_driver cx88_audio_pci_driver = {
810 .name = "cx88_audio",
811 .id_table = cx88_audio_pci_tbl,
812 .probe = cx88_audio_initdev,
813 .remove = cx88_audio_finidev,
814 };
815
816 /****************************************************************************
817 LINUX MODULE INIT
818 ****************************************************************************/
819
820 /*
821 * module init
822 */
823 static int cx88_audio_init(void)
824 {
825 printk(KERN_INFO "cx2388x alsa driver version %d.%d.%d loaded\n",
826 (CX88_VERSION_CODE >> 16) & 0xff,
827 (CX88_VERSION_CODE >> 8) & 0xff,
828 CX88_VERSION_CODE & 0xff);
829 #ifdef SNAPSHOT
830 printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
831 SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
832 #endif
833 return pci_register_driver(&cx88_audio_pci_driver);
834 }
835
836 /*
837 * module remove
838 */
839 static void cx88_audio_fini(void)
840 {
841
842 pci_unregister_driver(&cx88_audio_pci_driver);
843 }
844
845 module_init(cx88_audio_init);
846 module_exit(cx88_audio_fini);
847
848 /* ----------------------------------------------------------- */
849 /*
850 * Local variables:
851 * c-basic-offset: 8
852 * End:
853 */
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree