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
57struct 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};
90typedef struct cx88_audio_dev snd_cx88_card_t;
91
92
93
94/****************************************************************************
95			Module global static vars
96 ****************************************************************************/
97
98static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;	/* Index 0-MAX */
99static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;	/* ID for this card */
100static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 1};
101static struct snd_card *snd_cx88_cards[SNDRV_CARDS];
102
103module_param_array(enable, bool, NULL, 0444);
104MODULE_PARM_DESC(enable, "Enable cx88x soundcard. default enabled.");
105
106module_param_array(index, int, NULL, 0444);
107MODULE_PARM_DESC(index, "Index value for cx88x capture interface(s).");
108
109
110/****************************************************************************
111				Module macros
112 ****************************************************************************/
113
114MODULE_DESCRIPTION("ALSA driver module for cx2388x based TV cards");
115MODULE_AUTHOR("Ricardo Cerqueira");
116MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
117MODULE_LICENSE("GPL");
118MODULE_SUPPORTED_DEVICE("{{Conexant,23881},"
119			"{{Conexant,23882},"
120			"{{Conexant,23883}");
121static unsigned int debug;
122module_param(debug,int,0644);
123MODULE_PARM_DESC(debug,"enable debug messages");
124
125/****************************************************************************
126			Module specific funtions
127 ****************************************************************************/
128
129/*
130 * BOARD Specific: Sets audio DMA
131 */
132
133static 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
140	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);
141
142	/* setup fifo + format - out channel */
143	cx88_sram_channel_setup(chip->core, &cx88_sram_channels[SRAM_CH25],
144				buf->bpl, buf->risc.dma);
145
146	/* sets bpl size */
147	cx_write(MO_AUDD_LNGTH, buf->bpl);
148
149	/* reset counter */
150	cx_write(MO_AUDD_GPCNTRL,GP_COUNT_CONTROL_RESET);
151
152	dprintk(1,"Enabling IRQ, setting mask from 0x%x to 0x%x\n",chip->core->pci_irqmask,(chip->core->pci_irqmask | 0x02));
153	/* enable irqs */
154	cx_set(MO_PCI_INTMSK, chip->core->pci_irqmask | 0x02);
155
156
157	/* Enables corresponding bits at AUD_INT_STAT */
158	cx_write(MO_AUD_INTMSK,
159			(1<<16)|
160			(1<<12)|
161			(1<<4)|
162			(1<<0)
163			);
164
165	/* start dma */
166	cx_set(MO_DEV_CNTRL2, (1<<5)); /* Enables Risc Processor */
167	cx_set(MO_AUD_DMACNTRL, 0x11); /* audio downstream FIFO and RISC enable */
168
169	if (debug)
170		cx88_sram_channel_dump(chip->core, &cx88_sram_channels[SRAM_CH25]);
171
172	return 0;
173}
174
175/*
176 * BOARD Specific: Resets audio DMA
177 */
178static int _cx88_stop_audio_dma(snd_cx88_card_t *chip)
179{
180	struct cx88_core *core=chip->core;
181	dprintk(1, "Stopping audio DMA\n");
182
183	/* stop dma */
184	cx_clear(MO_AUD_DMACNTRL, 0x11);
185
186	/* disable irqs */
187	cx_clear(MO_PCI_INTMSK, 0x02);
188	cx_clear(MO_AUD_INTMSK,
189			(1<<16)|
190			(1<<12)|
191			(1<<4)|
192			(1<<0)
193			);
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 */
206static 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 */
222static 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 & (1 << 16)) {
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 & 0x01) {
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}
263
264/*
265 * BOARD Specific: Handles IRQ calls
266 */
267static irqreturn_t cx8801_irq(int irq, void *dev_id)
268{
269	snd_cx88_card_t *chip = dev_id;
270	struct cx88_core *core = chip->core;
271	u32 status;
272	int loop, handled = 0;
273
274	for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
275		status = cx_read(MO_PCI_INTSTAT) & (core->pci_irqmask | 0x02);
276		if (0 == status)
277			goto out;
278		dprintk( 3, "cx8801_irq\n" );
279		dprintk( 3, "    loop: %d/%d\n", loop, MAX_IRQ_LOOP );
280		dprintk( 3, "    status: %d\n", status );
281		handled = 1;
282		cx_write(MO_PCI_INTSTAT, status);
283
284		if (status & 0x02)
285		{
286			dprintk( 2, "    ALSA IRQ handling\n" );
287			cx8801_aud_irq(chip);
288		}
289	};
290
291	if (MAX_IRQ_LOOP == loop) {
292		dprintk( 0, "clearing mask\n" );
293		dprintk(1,"%s/0: irq loop -- clearing mask\n",
294		       core->name);
295		cx_clear(MO_PCI_INTMSK,0x02);
296	}
297
298 out:
299	return IRQ_RETVAL(handled);
300}
301
302
303static int dsp_buffer_free(snd_cx88_card_t *chip)
304{
305	BUG_ON(!chip->dma_size);
306
307	dprintk(2,"Freeing buffer\n");
308	videobuf_pci_dma_unmap(chip->pci, &chip->dma_risc);
309	videobuf_dma_free(&chip->dma_risc);
310	btcx_riscmem_free(chip->pci,&chip->buf->risc);
311	kfree(chip->buf);
312
313	chip->dma_size = 0;
314
315       return 0;
316}
317
318/****************************************************************************
319				ALSA PCM Interface
320 ****************************************************************************/
321
322/*
323 * Digital hardware definition
324 */
325static struct snd_pcm_hardware snd_cx88_digital_hw = {
326	.info = SNDRV_PCM_INFO_MMAP |
327		SNDRV_PCM_INFO_INTERLEAVED |
328		SNDRV_PCM_INFO_BLOCK_TRANSFER |
329		SNDRV_PCM_INFO_MMAP_VALID,
330	.formats = SNDRV_PCM_FMTBIT_S16_LE,
331
332	.rates =		SNDRV_PCM_RATE_48000,
333	.rate_min =		48000,
334	.rate_max =		48000,
335	.channels_min = 1,
336	.channels_max = 2,
337	.buffer_bytes_max = (2*2048),
338	.period_bytes_min = 2048,
339	.period_bytes_max = 2048,
340	.periods_min = 2,
341	.periods_max = 2,
342};
343
344/*
345 * audio pcm capture runtime free
346 */
347static void snd_card_cx88_runtime_free(struct snd_pcm_runtime *runtime)
348{
349}
350/*
351 * audio pcm capture open callback
352 */
353static int snd_cx88_pcm_open(struct snd_pcm_substream *substream)
354{
355	snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
356	struct snd_pcm_runtime *runtime = substream->runtime;
357	int err;
358
359	if (test_and_set_bit(0, &chip->opened))
360		return -EBUSY;
361
362	err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
363	if (err < 0)
364		goto _error;
365
366	chip->substream = substream;
367
368	chip->read_count = 0;
369	chip->read_offset = 0;
370
371	runtime->private_free = snd_card_cx88_runtime_free;
372	runtime->hw = snd_cx88_digital_hw;
373
374	return 0;
375_error:
376	dprintk(1,"Error opening PCM!\n");
377	clear_bit(0, &chip->opened);
378	smp_mb__after_clear_bit();
379	return err;
380}
381
382/*
383 * audio close callback
384 */
385static int snd_cx88_close(struct snd_pcm_substream *substream)
386{
387	snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
388
389	clear_bit(0, &chip->opened);
390	smp_mb__after_clear_bit();
391
392	return 0;
393}
394
395/*
396 * hw_params callback
397 */
398static int snd_cx88_hw_params(struct snd_pcm_substream * substream,
399			      struct snd_pcm_hw_params * hw_params)
400{
401	snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
402	struct cx88_buffer *buf;
403
404	if (substream->runtime->dma_area) {
405		dsp_buffer_free(chip);
406		substream->runtime->dma_area = NULL;
407	}
408
409
410	chip->period_size = params_period_bytes(hw_params);
411	chip->num_periods = params_periods(hw_params);
412	chip->dma_size = chip->period_size * params_periods(hw_params);
413
414	BUG_ON(!chip->dma_size);
415
416	dprintk(1,"Setting buffer\n");
417
418	buf = kzalloc(sizeof(*buf),GFP_KERNEL);
419	if (NULL == buf)
420		return -ENOMEM;
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_pci_dma_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 */
456static 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 */
472static int snd_cx88_prepare(struct snd_pcm_substream *substream)
473{
474	return 0;
475}
476
477
478/*
479 * trigger callback
480 */
481static 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 */
508static 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 */
528static 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 */
542static 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 ****************************************************************************/
560static 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 */
572static 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 */
584static 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
601static 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
619static struct pci_device_id cx88_audio_pci_tbl[] __devinitdata = {
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};
624MODULE_DEVICE_TABLE(pci, cx88_audio_pci_tbl);
625
626/*
627 * Chip-specific destructor
628 */
629
630static 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 */
647static 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
659static int devno;
660static 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,DMA_32BIT_MASK)) {
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	chip->core = core;
700
701	/* get irq */
702	err = request_irq(chip->pci->irq, cx8801_irq,
703			  IRQF_SHARED | IRQF_DISABLED, chip->core->name, chip);
704	if (err < 0) {
705		dprintk(0, "%s: can't get IRQ %d\n",
706		       chip->core->name, chip->pci->irq);
707		return err;
708	}
709
710	/* print pci info */
711	pci_read_config_byte(pci, PCI_CLASS_REVISION, &chip->pci_rev);
712	pci_read_config_byte(pci, PCI_LATENCY_TIMER,  &chip->pci_lat);
713
714	dprintk(1,"ALSA %s/%i: found at %s, rev: %d, irq: %d, "
715	       "latency: %d, mmio: 0x%llx\n", core->name, devno,
716	       pci_name(pci), chip->pci_rev, pci->irq,
717	       chip->pci_lat,(unsigned long long)pci_resource_start(pci,0));
718
719	chip->irq = pci->irq;
720	synchronize_irq(chip->irq);
721
722	snd_card_set_dev(card, &pci->dev);
723
724	*rchip = chip;
725
726	return 0;
727}
728
729static int __devinit cx88_audio_initdev(struct pci_dev *pci,
730				    const struct pci_device_id *pci_id)
731{
732	struct snd_card  *card;
733	snd_cx88_card_t  *chip;
734	int              err;
735
736	if (devno >= SNDRV_CARDS)
737		return (-ENODEV);
738
739	if (!enable[devno]) {
740		++devno;
741		return (-ENOENT);
742	}
743
744	card = snd_card_new(index[devno], id[devno], THIS_MODULE, sizeof(snd_cx88_card_t));
745	if (!card)
746		return (-ENOMEM);
747
748	card->private_free = snd_cx88_dev_free;
749
750	err = snd_cx88_create(card, pci, &chip);
751	if (err < 0)
752		return (err);
753
754	err = snd_cx88_pcm(chip, 0, "CX88 Digital");
755
756	if (err < 0) {
757		snd_card_free(card);
758		return (err);
759	}
760
761	err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_capture_volume, chip));
762	if (err < 0) {
763		snd_card_free(card);
764		return (err);
765	}
766
767	strcpy (card->driver, "CX88x");
768	sprintf(card->shortname, "Conexant CX%x", pci->device);
769	sprintf(card->longname, "%s at %#llx",
770		card->shortname,(unsigned long long)pci_resource_start(pci, 0));
771	strcpy (card->mixername, "CX88");
772
773	dprintk (0, "%s/%i: ALSA support for cx2388x boards\n",
774	       card->driver,devno);
775
776	err = snd_card_register(card);
777	if (err < 0) {
778		snd_card_free(card);
779		return (err);
780	}
781	snd_cx88_cards[devno] = card;
782
783	pci_set_drvdata(pci,card);
784
785	devno++;
786	return 0;
787}
788/*
789 * ALSA destructor
790 */
791static void __devexit cx88_audio_finidev(struct pci_dev *pci)
792{
793	struct cx88_audio_dev *card = pci_get_drvdata(pci);
794
795	snd_card_free((void *)card);
796
797	pci_set_drvdata(pci, NULL);
798
799	devno--;
800}
801
802/*
803 * PCI driver definition
804 */
805
806static struct pci_driver cx88_audio_pci_driver = {
807	.name     = "cx88_audio",
808	.id_table = cx88_audio_pci_tbl,
809	.probe    = cx88_audio_initdev,
810	.remove   = cx88_audio_finidev,
811};
812
813/****************************************************************************
814				LINUX MODULE INIT
815 ****************************************************************************/
816
817/*
818 * module init
819 */
820static int cx88_audio_init(void)
821{
822	printk(KERN_INFO "cx2388x alsa driver version %d.%d.%d loaded\n",
823	       (CX88_VERSION_CODE >> 16) & 0xff,
824	       (CX88_VERSION_CODE >>  8) & 0xff,
825	       CX88_VERSION_CODE & 0xff);
826#ifdef SNAPSHOT
827	printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
828	       SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
829#endif
830	return pci_register_driver(&cx88_audio_pci_driver);
831}
832
833/*
834 * module remove
835 */
836static void cx88_audio_fini(void)
837{
838
839	pci_unregister_driver(&cx88_audio_pci_driver);
840}
841
842module_init(cx88_audio_init);
843module_exit(cx88_audio_fini);
844
845/* ----------------------------------------------------------- */
846/*
847 * Local variables:
848 * c-basic-offset: 8
849 * End:
850 */
851