90c36c5705c368bfdb98525af9faf3c7e62d15f9
[linux-2.6.git] / drivers / media / video / cx88 / cx88-alsa.c
1 /*
2  *
3  *  Support for audio capture
4  *  PCI function #1 of the cx2388x.
5  *
6  *    (c) 2007 Trent Piepho <xyzzy@speakeasy.org>
7  *    (c) 2005,2006 Ricardo Cerqueira <v4l@cerqueira.org>
8  *    (c) 2005 Mauro Carvalho Chehab <mchehab@infradead.org>
9  *    Based on a dummy cx88 module by Gerd Knorr <kraxel@bytesex.org>
10  *    Based on dummy.c by Jaroslav Kysela <perex@suse.cz>
11  *
12  *  This program is free software; you can redistribute it and/or modify
13  *  it under the terms of the GNU General Public License as published by
14  *  the Free Software Foundation; either version 2 of the License, or
15  *  (at your option) any later version.
16  *
17  *  This program is distributed in the hope that it will be useful,
18  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
19  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
20  *  GNU General Public License for more details.
21  *
22  *  You should have received a copy of the GNU General Public License
23  *  along with this program; if not, write to the Free Software
24  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25  */
26
27 #include <linux/module.h>
28 #include <linux/init.h>
29 #include <linux/device.h>
30 #include <linux/interrupt.h>
31 #include <linux/vmalloc.h>
32 #include <linux/dma-mapping.h>
33 #include <linux/pci.h>
34
35 #include <asm/delay.h>
36 #include <sound/driver.h>
37 #include <sound/core.h>
38 #include <sound/pcm.h>
39 #include <sound/pcm_params.h>
40 #include <sound/control.h>
41 #include <sound/initval.h>
42
43 #include "cx88.h"
44 #include "cx88-reg.h"
45
46 #define dprintk(level,fmt, arg...)      if (debug >= level) \
47         printk(KERN_INFO "%s/1: " fmt, chip->core->name , ## arg)
48
49 #define dprintk_core(level,fmt, arg...) if (debug >= level) \
50         printk(KERN_DEBUG "%s/1: " fmt, chip->core->name , ## arg)
51
52 /****************************************************************************
53         Data type declarations - Can be moded to a header file later
54  ****************************************************************************/
55
56 struct cx88_audio_dev {
57         struct cx88_core           *core;
58         struct cx88_dmaqueue       q;
59
60         /* pci i/o */
61         struct pci_dev             *pci;
62
63         /* audio controls */
64         int                        irq;
65
66         struct snd_card            *card;
67
68         spinlock_t                 reg_lock;
69         atomic_t                   count;
70
71         unsigned int               dma_size;
72         unsigned int               period_size;
73         unsigned int               num_periods;
74
75         struct videobuf_dmabuf     *dma_risc;
76
77         struct cx88_buffer         *buf;
78
79         struct snd_pcm_substream   *substream;
80 };
81 typedef struct cx88_audio_dev snd_cx88_card_t;
82
83
84
85 /****************************************************************************
86                         Module global static vars
87  ****************************************************************************/
88
89 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
90 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
91 static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 1};
92
93 module_param_array(enable, bool, NULL, 0444);
94 MODULE_PARM_DESC(enable, "Enable cx88x soundcard. default enabled.");
95
96 module_param_array(index, int, NULL, 0444);
97 MODULE_PARM_DESC(index, "Index value for cx88x capture interface(s).");
98
99
100 /****************************************************************************
101                                 Module macros
102  ****************************************************************************/
103
104 MODULE_DESCRIPTION("ALSA driver module for cx2388x based TV cards");
105 MODULE_AUTHOR("Ricardo Cerqueira");
106 MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
107 MODULE_LICENSE("GPL");
108 MODULE_SUPPORTED_DEVICE("{{Conexant,23881},"
109                         "{{Conexant,23882},"
110                         "{{Conexant,23883}");
111 static unsigned int debug;
112 module_param(debug,int,0644);
113 MODULE_PARM_DESC(debug,"enable debug messages");
114
115 /****************************************************************************
116                         Module specific funtions
117  ****************************************************************************/
118
119 /*
120  * BOARD Specific: Sets audio DMA
121  */
122
123 static int _cx88_start_audio_dma(snd_cx88_card_t *chip)
124 {
125         struct cx88_buffer   *buf = chip->buf;
126         struct cx88_core *core=chip->core;
127         struct sram_channel *audio_ch = &cx88_sram_channels[SRAM_CH25];
128
129         /* Make sure RISC/FIFO are off before changing FIFO/RISC settings */
130         cx_clear(MO_AUD_DMACNTRL, 0x11);
131
132         /* setup fifo + format - out channel */
133         cx88_sram_channel_setup(chip->core, audio_ch, buf->bpl, buf->risc.dma);
134
135         /* sets bpl size */
136         cx_write(MO_AUDD_LNGTH, buf->bpl);
137
138         /* reset counter */
139         cx_write(MO_AUDD_GPCNTRL, GP_COUNT_CONTROL_RESET);
140         atomic_set(&chip->count, 0);
141
142         dprintk(1, "Start audio DMA, %d B/line, %d lines/FIFO, %d periods, %d "
143                 "byte buffer\n", buf->bpl, cx_read(audio_ch->cmds_start + 8)>>1,
144                 chip->num_periods, buf->bpl * chip->num_periods);
145
146         /* Enables corresponding bits at AUD_INT_STAT */
147         cx_write(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC |
148                                 AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1);
149
150         /* Clean any pending interrupt bits already set */
151         cx_write(MO_AUD_INTSTAT, ~0);
152
153         /* enable audio irqs */
154         cx_set(MO_PCI_INTMSK, chip->core->pci_irqmask | PCI_INT_AUDINT);
155
156         /* start dma */
157         cx_set(MO_DEV_CNTRL2, (1<<5)); /* Enables Risc Processor */
158         cx_set(MO_AUD_DMACNTRL, 0x11); /* audio downstream FIFO and RISC enable */
159
160         if (debug)
161                 cx88_sram_channel_dump(chip->core, audio_ch);
162
163         return 0;
164 }
165
166 /*
167  * BOARD Specific: Resets audio DMA
168  */
169 static int _cx88_stop_audio_dma(snd_cx88_card_t *chip)
170 {
171         struct cx88_core *core=chip->core;
172         dprintk(1, "Stopping audio DMA\n");
173
174         /* stop dma */
175         cx_clear(MO_AUD_DMACNTRL, 0x11);
176
177         /* disable irqs */
178         cx_clear(MO_PCI_INTMSK, PCI_INT_AUDINT);
179         cx_clear(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC |
180                                 AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1);
181
182         if (debug)
183                 cx88_sram_channel_dump(chip->core, &cx88_sram_channels[SRAM_CH25]);
184
185         return 0;
186 }
187
188 #define MAX_IRQ_LOOP 50
189
190 /*
191  * BOARD Specific: IRQ dma bits
192  */
193 static char *cx88_aud_irqs[32] = {
194         "dn_risci1", "up_risci1", "rds_dn_risc1", /* 0-2 */
195         NULL,                                     /* reserved */
196         "dn_risci2", "up_risci2", "rds_dn_risc2", /* 4-6 */
197         NULL,                                     /* reserved */
198         "dnf_of", "upf_uf", "rds_dnf_uf",         /* 8-10 */
199         NULL,                                     /* reserved */
200         "dn_sync", "up_sync", "rds_dn_sync",      /* 12-14 */
201         NULL,                                     /* reserved */
202         "opc_err", "par_err", "rip_err",          /* 16-18 */
203         "pci_abort", "ber_irq", "mchg_irq"        /* 19-21 */
204 };
205
206 /*
207  * BOARD Specific: Threats IRQ audio specific calls
208  */
209 static void cx8801_aud_irq(snd_cx88_card_t *chip)
210 {
211         struct cx88_core *core = chip->core;
212         u32 status, mask;
213
214         status = cx_read(MO_AUD_INTSTAT);
215         mask   = cx_read(MO_AUD_INTMSK);
216         if (0 == (status & mask))
217                 return;
218         cx_write(MO_AUD_INTSTAT, status);
219         if (debug > 1  ||  (status & mask & ~0xff))
220                 cx88_print_irqbits(core->name, "irq aud",
221                                    cx88_aud_irqs, ARRAY_SIZE(cx88_aud_irqs),
222                                    status, mask);
223         /* risc op code error */
224         if (status & AUD_INT_OPC_ERR) {
225                 printk(KERN_WARNING "%s/1: Audio risc op code error\n",core->name);
226                 cx_clear(MO_AUD_DMACNTRL, 0x11);
227                 cx88_sram_channel_dump(core, &cx88_sram_channels[SRAM_CH25]);
228         }
229         if (status & AUD_INT_DN_SYNC) {
230                 dprintk(1, "Downstream sync error\n");
231                 cx_write(MO_AUDD_GPCNTRL, GP_COUNT_CONTROL_RESET);
232                 return;
233         }
234         /* risc1 downstream */
235         if (status & AUD_INT_DN_RISCI1) {
236                 atomic_set(&chip->count, cx_read(MO_AUDD_GPCNT));
237                 snd_pcm_period_elapsed(chip->substream);
238         }
239         /* FIXME: Any other status should deserve a special handling? */
240 }
241
242 /*
243  * BOARD Specific: Handles IRQ calls
244  */
245 static irqreturn_t cx8801_irq(int irq, void *dev_id)
246 {
247         snd_cx88_card_t *chip = dev_id;
248         struct cx88_core *core = chip->core;
249         u32 status;
250         int loop, handled = 0;
251
252         for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
253                 status = cx_read(MO_PCI_INTSTAT) &
254                         (core->pci_irqmask | PCI_INT_AUDINT);
255                 if (0 == status)
256                         goto out;
257                 dprintk(3, "cx8801_irq loop %d/%d, status %x\n",
258                         loop, MAX_IRQ_LOOP, status);
259                 handled = 1;
260                 cx_write(MO_PCI_INTSTAT, status);
261
262                 if (status & core->pci_irqmask)
263                         cx88_core_irq(core, status);
264                 if (status & PCI_INT_AUDINT)
265                         cx8801_aud_irq(chip);
266         }
267
268         if (MAX_IRQ_LOOP == loop) {
269                 printk(KERN_ERR
270                        "%s/1: IRQ loop detected, disabling interrupts\n",
271                        core->name);
272                 cx_clear(MO_PCI_INTMSK, PCI_INT_AUDINT);
273         }
274
275  out:
276         return IRQ_RETVAL(handled);
277 }
278
279
280 static int dsp_buffer_free(snd_cx88_card_t *chip)
281 {
282         BUG_ON(!chip->dma_size);
283
284         dprintk(2,"Freeing buffer\n");
285         videobuf_pci_dma_unmap(chip->pci, chip->dma_risc);
286         videobuf_dma_free(chip->dma_risc);
287         btcx_riscmem_free(chip->pci,&chip->buf->risc);
288         kfree(chip->buf);
289
290         chip->dma_risc = NULL;
291         chip->dma_size = 0;
292
293         return 0;
294 }
295
296 /****************************************************************************
297                                 ALSA PCM Interface
298  ****************************************************************************/
299
300 /*
301  * Digital hardware definition
302  */
303 #define DEFAULT_FIFO_SIZE       4096
304 static struct snd_pcm_hardware snd_cx88_digital_hw = {
305         .info = SNDRV_PCM_INFO_MMAP |
306                 SNDRV_PCM_INFO_INTERLEAVED |
307                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
308                 SNDRV_PCM_INFO_MMAP_VALID,
309         .formats = SNDRV_PCM_FMTBIT_S16_LE,
310
311         .rates =                SNDRV_PCM_RATE_48000,
312         .rate_min =             48000,
313         .rate_max =             48000,
314         .channels_min = 2,
315         .channels_max = 2,
316         /* Analog audio output will be full of clicks and pops if there
317            are not exactly four lines in the SRAM FIFO buffer.  */
318         .period_bytes_min = DEFAULT_FIFO_SIZE/4,
319         .period_bytes_max = DEFAULT_FIFO_SIZE/4,
320         .periods_min = 1,
321         .periods_max = 1024,
322         .buffer_bytes_max = (1024*1024),
323 };
324
325 /*
326  * audio pcm capture open callback
327  */
328 static int snd_cx88_pcm_open(struct snd_pcm_substream *substream)
329 {
330         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
331         struct snd_pcm_runtime *runtime = substream->runtime;
332         int err;
333
334         err = snd_pcm_hw_constraint_pow2(runtime, 0, SNDRV_PCM_HW_PARAM_PERIODS);
335         if (err < 0)
336                 goto _error;
337
338         chip->substream = substream;
339
340         runtime->hw = snd_cx88_digital_hw;
341
342         if (cx88_sram_channels[SRAM_CH25].fifo_size != DEFAULT_FIFO_SIZE) {
343                 unsigned int bpl = cx88_sram_channels[SRAM_CH25].fifo_size / 4;
344                 bpl &= ~7; /* must be multiple of 8 */
345                 runtime->hw.period_bytes_min = bpl;
346                 runtime->hw.period_bytes_max = bpl;
347         }
348
349         return 0;
350 _error:
351         dprintk(1,"Error opening PCM!\n");
352         return err;
353 }
354
355 /*
356  * audio close callback
357  */
358 static int snd_cx88_close(struct snd_pcm_substream *substream)
359 {
360         return 0;
361 }
362
363 /*
364  * hw_params callback
365  */
366 static int snd_cx88_hw_params(struct snd_pcm_substream * substream,
367                               struct snd_pcm_hw_params * hw_params)
368 {
369         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
370         struct videobuf_dmabuf *dma;
371
372         struct cx88_buffer *buf;
373         int ret;
374
375         if (substream->runtime->dma_area) {
376                 dsp_buffer_free(chip);
377                 substream->runtime->dma_area = NULL;
378         }
379
380         chip->period_size = params_period_bytes(hw_params);
381         chip->num_periods = params_periods(hw_params);
382         chip->dma_size = chip->period_size * params_periods(hw_params);
383
384         BUG_ON(!chip->dma_size);
385         BUG_ON(chip->num_periods & (chip->num_periods-1));
386
387         buf = videobuf_pci_alloc(sizeof(*buf));
388         if (NULL == buf)
389                 return -ENOMEM;
390
391         buf->vb.memory = V4L2_MEMORY_MMAP;
392         buf->vb.field  = V4L2_FIELD_NONE;
393         buf->vb.width  = chip->period_size;
394         buf->bpl       = chip->period_size;
395         buf->vb.height = chip->num_periods;
396         buf->vb.size   = chip->dma_size;
397
398         dma=videobuf_to_dma(&buf->vb);
399         videobuf_dma_init(dma);
400         ret = videobuf_dma_init_kernel(dma, PCI_DMA_FROMDEVICE,
401                         (PAGE_ALIGN(buf->vb.size) >> PAGE_SHIFT));
402         if (ret < 0)
403                 goto error;
404
405         ret = videobuf_pci_dma_map(chip->pci,dma);
406         if (ret < 0)
407                 goto error;
408
409         ret = cx88_risc_databuffer(chip->pci, &buf->risc, dma->sglist,
410                                    buf->vb.width, buf->vb.height, 1);
411         if (ret < 0)
412                 goto error;
413
414         /* Loop back to start of program */
415         buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP|RISC_IRQ1|RISC_CNT_INC);
416         buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
417
418         buf->vb.state = STATE_PREPARED;
419
420         chip->buf = buf;
421         chip->dma_risc = dma;
422
423         substream->runtime->dma_area = chip->dma_risc->vmalloc;
424         substream->runtime->dma_bytes = chip->dma_size;
425         substream->runtime->dma_addr = 0;
426         return 0;
427
428 error:
429         kfree(buf);
430         return ret;
431 }
432
433 /*
434  * hw free callback
435  */
436 static int snd_cx88_hw_free(struct snd_pcm_substream * substream)
437 {
438
439         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
440
441         if (substream->runtime->dma_area) {
442                 dsp_buffer_free(chip);
443                 substream->runtime->dma_area = NULL;
444         }
445
446         return 0;
447 }
448
449 /*
450  * prepare callback
451  */
452 static int snd_cx88_prepare(struct snd_pcm_substream *substream)
453 {
454         return 0;
455 }
456
457 /*
458  * trigger callback
459  */
460 static int snd_cx88_card_trigger(struct snd_pcm_substream *substream, int cmd)
461 {
462         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
463         int err;
464
465         /* Local interrupts are already disabled by ALSA */
466         spin_lock(&chip->reg_lock);
467
468         switch (cmd) {
469         case SNDRV_PCM_TRIGGER_START:
470                 err=_cx88_start_audio_dma(chip);
471                 break;
472         case SNDRV_PCM_TRIGGER_STOP:
473                 err=_cx88_stop_audio_dma(chip);
474                 break;
475         default:
476                 err=-EINVAL;
477                 break;
478         }
479
480         spin_unlock(&chip->reg_lock);
481
482         return err;
483 }
484
485 /*
486  * pointer callback
487  */
488 static snd_pcm_uframes_t snd_cx88_pointer(struct snd_pcm_substream *substream)
489 {
490         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
491         struct snd_pcm_runtime *runtime = substream->runtime;
492         u16 count;
493
494         count = atomic_read(&chip->count);
495
496 //      dprintk(2, "%s - count %d (+%u), period %d, frame %lu\n", __FUNCTION__,
497 //              count, new, count & (runtime->periods-1),
498 //              runtime->period_size * (count & (runtime->periods-1)));
499         return runtime->period_size * (count & (runtime->periods-1));
500 }
501
502 /*
503  * page callback (needed for mmap)
504  */
505 static struct page *snd_cx88_page(struct snd_pcm_substream *substream,
506                                 unsigned long offset)
507 {
508         void *pageptr = substream->runtime->dma_area + offset;
509         return vmalloc_to_page(pageptr);
510 }
511
512 /*
513  * operators
514  */
515 static struct snd_pcm_ops snd_cx88_pcm_ops = {
516         .open = snd_cx88_pcm_open,
517         .close = snd_cx88_close,
518         .ioctl = snd_pcm_lib_ioctl,
519         .hw_params = snd_cx88_hw_params,
520         .hw_free = snd_cx88_hw_free,
521         .prepare = snd_cx88_prepare,
522         .trigger = snd_cx88_card_trigger,
523         .pointer = snd_cx88_pointer,
524         .page = snd_cx88_page,
525 };
526
527 /*
528  * create a PCM device
529  */
530 static int __devinit snd_cx88_pcm(snd_cx88_card_t *chip, int device, char *name)
531 {
532         int err;
533         struct snd_pcm *pcm;
534
535         err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm);
536         if (err < 0)
537                 return err;
538         pcm->private_data = chip;
539         strcpy(pcm->name, name);
540         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cx88_pcm_ops);
541
542         return 0;
543 }
544
545 /****************************************************************************
546                                 CONTROL INTERFACE
547  ****************************************************************************/
548 static int snd_cx88_capture_volume_info(struct snd_kcontrol *kcontrol,
549                                         struct snd_ctl_elem_info *info)
550 {
551         info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
552         info->count = 2;
553         info->value.integer.min = 0;
554         info->value.integer.max = 0x3f;
555
556         return 0;
557 }
558
559 /* OK - TODO: test it */
560 static int snd_cx88_capture_volume_get(struct snd_kcontrol *kcontrol,
561                                        struct snd_ctl_elem_value *value)
562 {
563         snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
564         struct cx88_core *core=chip->core;
565         int vol = 0x3f - (cx_read(AUD_VOL_CTL) & 0x3f),
566             bal = cx_read(AUD_BAL_CTL);
567
568         value->value.integer.value[(bal & 0x40) ? 0 : 1] = vol;
569         vol -= (bal & 0x3f);
570         value->value.integer.value[(bal & 0x40) ? 1 : 0] = vol < 0 ? 0 : vol;
571
572         return 0;
573 }
574
575 /* OK - TODO: test it */
576 static int snd_cx88_capture_volume_put(struct snd_kcontrol *kcontrol,
577                                        struct snd_ctl_elem_value *value)
578 {
579         snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
580         struct cx88_core *core=chip->core;
581         int v, b;
582         int changed = 0;
583         u32 old;
584
585         b = value->value.integer.value[1] - value->value.integer.value[0];
586         if (b < 0) {
587             v = 0x3f - value->value.integer.value[0];
588             b = (-b) | 0x40;
589         } else {
590             v = 0x3f - value->value.integer.value[1];
591         }
592         /* Do we really know this will always be called with IRQs on? */
593         spin_lock_irq(&chip->reg_lock);
594         old = cx_read(AUD_VOL_CTL);
595         if (v != (old & 0x3f)) {
596             cx_write(AUD_VOL_CTL, (old & ~0x3f) | v);
597             changed = 1;
598         }
599         if (cx_read(AUD_BAL_CTL) != b) {
600             cx_write(AUD_BAL_CTL, b);
601             changed = 1;
602         }
603         spin_unlock_irq(&chip->reg_lock);
604
605         return changed;
606 }
607
608 static struct snd_kcontrol_new snd_cx88_capture_volume = {
609         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
610         .name = "Capture Volume",
611         .info = snd_cx88_capture_volume_info,
612         .get = snd_cx88_capture_volume_get,
613         .put = snd_cx88_capture_volume_put,
614 };
615
616
617 /****************************************************************************
618                         Basic Flow for Sound Devices
619  ****************************************************************************/
620
621 /*
622  * PCI ID Table - 14f1:8801 and 14f1:8811 means function 1: Audio
623  * Only boards with eeprom and byte 1 at eeprom=1 have it
624  */
625
626 static struct pci_device_id cx88_audio_pci_tbl[] __devinitdata = {
627         {0x14f1,0x8801,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
628         {0x14f1,0x8811,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
629         {0, }
630 };
631 MODULE_DEVICE_TABLE(pci, cx88_audio_pci_tbl);
632
633 /*
634  * Chip-specific destructor
635  */
636
637 static int snd_cx88_free(snd_cx88_card_t *chip)
638 {
639
640         if (chip->irq >= 0){
641                 synchronize_irq(chip->irq);
642                 free_irq(chip->irq, chip);
643         }
644
645         cx88_core_put(chip->core,chip->pci);
646
647         pci_disable_device(chip->pci);
648         return 0;
649 }
650
651 /*
652  * Component Destructor
653  */
654 static void snd_cx88_dev_free(struct snd_card * card)
655 {
656         snd_cx88_card_t *chip = card->private_data;
657
658         snd_cx88_free(chip);
659 }
660
661
662 /*
663  * Alsa Constructor - Component probe
664  */
665
666 static int devno;
667 static int __devinit snd_cx88_create(struct snd_card *card,
668                                      struct pci_dev *pci,
669                                      snd_cx88_card_t **rchip)
670 {
671         snd_cx88_card_t   *chip;
672         struct cx88_core  *core;
673         int               err;
674         unsigned char     pci_lat;
675
676         *rchip = NULL;
677
678         err = pci_enable_device(pci);
679         if (err < 0)
680                 return err;
681
682         pci_set_master(pci);
683
684         chip = (snd_cx88_card_t *) card->private_data;
685
686         core = cx88_core_get(pci);
687         if (NULL == core) {
688                 err = -EINVAL;
689                 kfree (chip);
690                 return err;
691         }
692
693         if (!pci_dma_supported(pci,DMA_32BIT_MASK)) {
694                 dprintk(0, "%s/1: Oops: no 32bit PCI DMA ???\n",core->name);
695                 err = -EIO;
696                 cx88_core_put(core,pci);
697                 return err;
698         }
699
700
701         /* pci init */
702         chip->card = card;
703         chip->pci = pci;
704         chip->irq = -1;
705         spin_lock_init(&chip->reg_lock);
706
707         chip->core = core;
708
709         /* get irq */
710         err = request_irq(chip->pci->irq, cx8801_irq,
711                           IRQF_SHARED | IRQF_DISABLED, chip->core->name, chip);
712         if (err < 0) {
713                 dprintk(0, "%s: can't get IRQ %d\n",
714                        chip->core->name, chip->pci->irq);
715                 return err;
716         }
717
718         /* print pci info */
719         pci_read_config_byte(pci, PCI_LATENCY_TIMER, &pci_lat);
720
721         dprintk(1,"ALSA %s/%i: found at %s, rev: %d, irq: %d, "
722                "latency: %d, mmio: 0x%llx\n", core->name, devno,
723                pci_name(pci), pci->revision, pci->irq,
724                pci_lat, (unsigned long long)pci_resource_start(pci,0));
725
726         chip->irq = pci->irq;
727         synchronize_irq(chip->irq);
728
729         snd_card_set_dev(card, &pci->dev);
730
731         *rchip = chip;
732
733         return 0;
734 }
735
736 static int __devinit cx88_audio_initdev(struct pci_dev *pci,
737                                     const struct pci_device_id *pci_id)
738 {
739         struct snd_card  *card;
740         snd_cx88_card_t  *chip;
741         int              err;
742
743         if (devno >= SNDRV_CARDS)
744                 return (-ENODEV);
745
746         if (!enable[devno]) {
747                 ++devno;
748                 return (-ENOENT);
749         }
750
751         card = snd_card_new(index[devno], id[devno], THIS_MODULE, sizeof(snd_cx88_card_t));
752         if (!card)
753                 return (-ENOMEM);
754
755         card->private_free = snd_cx88_dev_free;
756
757         err = snd_cx88_create(card, pci, &chip);
758         if (err < 0)
759                 return (err);
760
761         err = snd_cx88_pcm(chip, 0, "CX88 Digital");
762         if (err < 0)
763                 goto error;
764
765         err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_capture_volume, chip));
766         if (err < 0)
767                 goto error;
768
769         strcpy (card->driver, "CX88x");
770         sprintf(card->shortname, "Conexant CX%x", pci->device);
771         sprintf(card->longname, "%s at %#llx",
772                 card->shortname,(unsigned long long)pci_resource_start(pci, 0));
773         strcpy (card->mixername, "CX88");
774
775         dprintk (0, "%s/%i: ALSA support for cx2388x boards\n",
776                card->driver,devno);
777
778         err = snd_card_register(card);
779         if (err < 0)
780                 goto error;
781         pci_set_drvdata(pci,card);
782
783         devno++;
784         return 0;
785
786 error:
787         snd_card_free(card);
788         return err;
789 }
790 /*
791  * ALSA destructor
792  */
793 static void __devexit cx88_audio_finidev(struct pci_dev *pci)
794 {
795         struct cx88_audio_dev *card = pci_get_drvdata(pci);
796
797         snd_card_free((void *)card);
798
799         pci_set_drvdata(pci, NULL);
800
801         devno--;
802 }
803
804 /*
805  * PCI driver definition
806  */
807
808 static struct pci_driver cx88_audio_pci_driver = {
809         .name     = "cx88_audio",
810         .id_table = cx88_audio_pci_tbl,
811         .probe    = cx88_audio_initdev,
812         .remove   = cx88_audio_finidev,
813 };
814
815 /****************************************************************************
816                                 LINUX MODULE INIT
817  ****************************************************************************/
818
819 /*
820  * module init
821  */
822 static int cx88_audio_init(void)
823 {
824         printk(KERN_INFO "cx2388x alsa driver version %d.%d.%d loaded\n",
825                (CX88_VERSION_CODE >> 16) & 0xff,
826                (CX88_VERSION_CODE >>  8) & 0xff,
827                CX88_VERSION_CODE & 0xff);
828 #ifdef SNAPSHOT
829         printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
830                SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
831 #endif
832         return pci_register_driver(&cx88_audio_pci_driver);
833 }
834
835 /*
836  * module remove
837  */
838 static void cx88_audio_fini(void)
839 {
840
841         pci_unregister_driver(&cx88_audio_pci_driver);
842 }
843
844 module_init(cx88_audio_init);
845 module_exit(cx88_audio_fini);
846
847 /* ----------------------------------------------------------- */
848 /*
849  * Local variables:
850  * c-basic-offset: 8
851  * End:
852  */