V4L/DVB (13550): v4l: Use the new video_device_node_name function
[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@perex.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/core.h>
37 #include <sound/pcm.h>
38 #include <sound/pcm_params.h>
39 #include <sound/control.h>
40 #include <sound/initval.h>
41 #include <sound/tlv.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_sg_dma_unmap(&chip->pci->dev, 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         if (!chip) {
335                 printk(KERN_ERR "BUG: cx88 can't find device struct."
336                                 " Can't proceed with open\n");
337                 return -ENODEV;
338         }
339
340         err = snd_pcm_hw_constraint_pow2(runtime, 0, SNDRV_PCM_HW_PARAM_PERIODS);
341         if (err < 0)
342                 goto _error;
343
344         chip->substream = substream;
345
346         runtime->hw = snd_cx88_digital_hw;
347
348         if (cx88_sram_channels[SRAM_CH25].fifo_size != DEFAULT_FIFO_SIZE) {
349                 unsigned int bpl = cx88_sram_channels[SRAM_CH25].fifo_size / 4;
350                 bpl &= ~7; /* must be multiple of 8 */
351                 runtime->hw.period_bytes_min = bpl;
352                 runtime->hw.period_bytes_max = bpl;
353         }
354
355         return 0;
356 _error:
357         dprintk(1,"Error opening PCM!\n");
358         return err;
359 }
360
361 /*
362  * audio close callback
363  */
364 static int snd_cx88_close(struct snd_pcm_substream *substream)
365 {
366         return 0;
367 }
368
369 /*
370  * hw_params callback
371  */
372 static int snd_cx88_hw_params(struct snd_pcm_substream * substream,
373                               struct snd_pcm_hw_params * hw_params)
374 {
375         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
376         struct videobuf_dmabuf *dma;
377
378         struct cx88_buffer *buf;
379         int ret;
380
381         if (substream->runtime->dma_area) {
382                 dsp_buffer_free(chip);
383                 substream->runtime->dma_area = NULL;
384         }
385
386         chip->period_size = params_period_bytes(hw_params);
387         chip->num_periods = params_periods(hw_params);
388         chip->dma_size = chip->period_size * params_periods(hw_params);
389
390         BUG_ON(!chip->dma_size);
391         BUG_ON(chip->num_periods & (chip->num_periods-1));
392
393         buf = videobuf_sg_alloc(sizeof(*buf));
394         if (NULL == buf)
395                 return -ENOMEM;
396
397         buf->vb.memory = V4L2_MEMORY_MMAP;
398         buf->vb.field  = V4L2_FIELD_NONE;
399         buf->vb.width  = chip->period_size;
400         buf->bpl       = chip->period_size;
401         buf->vb.height = chip->num_periods;
402         buf->vb.size   = chip->dma_size;
403
404         dma = videobuf_to_dma(&buf->vb);
405         videobuf_dma_init(dma);
406         ret = videobuf_dma_init_kernel(dma, PCI_DMA_FROMDEVICE,
407                         (PAGE_ALIGN(buf->vb.size) >> PAGE_SHIFT));
408         if (ret < 0)
409                 goto error;
410
411         ret = videobuf_sg_dma_map(&chip->pci->dev, dma);
412         if (ret < 0)
413                 goto error;
414
415         ret = cx88_risc_databuffer(chip->pci, &buf->risc, dma->sglist,
416                                    buf->vb.width, buf->vb.height, 1);
417         if (ret < 0)
418                 goto error;
419
420         /* Loop back to start of program */
421         buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP|RISC_IRQ1|RISC_CNT_INC);
422         buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
423
424         buf->vb.state = VIDEOBUF_PREPARED;
425
426         chip->buf = buf;
427         chip->dma_risc = dma;
428
429         substream->runtime->dma_area = chip->dma_risc->vmalloc;
430         substream->runtime->dma_bytes = chip->dma_size;
431         substream->runtime->dma_addr = 0;
432         return 0;
433
434 error:
435         kfree(buf);
436         return ret;
437 }
438
439 /*
440  * hw free callback
441  */
442 static int snd_cx88_hw_free(struct snd_pcm_substream * substream)
443 {
444
445         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
446
447         if (substream->runtime->dma_area) {
448                 dsp_buffer_free(chip);
449                 substream->runtime->dma_area = NULL;
450         }
451
452         return 0;
453 }
454
455 /*
456  * prepare callback
457  */
458 static int snd_cx88_prepare(struct snd_pcm_substream *substream)
459 {
460         return 0;
461 }
462
463 /*
464  * trigger callback
465  */
466 static int snd_cx88_card_trigger(struct snd_pcm_substream *substream, int cmd)
467 {
468         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
469         int err;
470
471         /* Local interrupts are already disabled by ALSA */
472         spin_lock(&chip->reg_lock);
473
474         switch (cmd) {
475         case SNDRV_PCM_TRIGGER_START:
476                 err=_cx88_start_audio_dma(chip);
477                 break;
478         case SNDRV_PCM_TRIGGER_STOP:
479                 err=_cx88_stop_audio_dma(chip);
480                 break;
481         default:
482                 err=-EINVAL;
483                 break;
484         }
485
486         spin_unlock(&chip->reg_lock);
487
488         return err;
489 }
490
491 /*
492  * pointer callback
493  */
494 static snd_pcm_uframes_t snd_cx88_pointer(struct snd_pcm_substream *substream)
495 {
496         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
497         struct snd_pcm_runtime *runtime = substream->runtime;
498         u16 count;
499
500         count = atomic_read(&chip->count);
501
502 //      dprintk(2, "%s - count %d (+%u), period %d, frame %lu\n", __func__,
503 //              count, new, count & (runtime->periods-1),
504 //              runtime->period_size * (count & (runtime->periods-1)));
505         return runtime->period_size * (count & (runtime->periods-1));
506 }
507
508 /*
509  * page callback (needed for mmap)
510  */
511 static struct page *snd_cx88_page(struct snd_pcm_substream *substream,
512                                 unsigned long offset)
513 {
514         void *pageptr = substream->runtime->dma_area + offset;
515         return vmalloc_to_page(pageptr);
516 }
517
518 /*
519  * operators
520  */
521 static struct snd_pcm_ops snd_cx88_pcm_ops = {
522         .open = snd_cx88_pcm_open,
523         .close = snd_cx88_close,
524         .ioctl = snd_pcm_lib_ioctl,
525         .hw_params = snd_cx88_hw_params,
526         .hw_free = snd_cx88_hw_free,
527         .prepare = snd_cx88_prepare,
528         .trigger = snd_cx88_card_trigger,
529         .pointer = snd_cx88_pointer,
530         .page = snd_cx88_page,
531 };
532
533 /*
534  * create a PCM device
535  */
536 static int __devinit snd_cx88_pcm(snd_cx88_card_t *chip, int device, char *name)
537 {
538         int err;
539         struct snd_pcm *pcm;
540
541         err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm);
542         if (err < 0)
543                 return err;
544         pcm->private_data = chip;
545         strcpy(pcm->name, name);
546         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cx88_pcm_ops);
547
548         return 0;
549 }
550
551 /****************************************************************************
552                                 CONTROL INTERFACE
553  ****************************************************************************/
554 static int snd_cx88_volume_info(struct snd_kcontrol *kcontrol,
555                                 struct snd_ctl_elem_info *info)
556 {
557         info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
558         info->count = 2;
559         info->value.integer.min = 0;
560         info->value.integer.max = 0x3f;
561
562         return 0;
563 }
564
565 static int snd_cx88_volume_get(struct snd_kcontrol *kcontrol,
566                                struct snd_ctl_elem_value *value)
567 {
568         snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
569         struct cx88_core *core=chip->core;
570         int vol = 0x3f - (cx_read(AUD_VOL_CTL) & 0x3f),
571             bal = cx_read(AUD_BAL_CTL);
572
573         value->value.integer.value[(bal & 0x40) ? 0 : 1] = vol;
574         vol -= (bal & 0x3f);
575         value->value.integer.value[(bal & 0x40) ? 1 : 0] = vol < 0 ? 0 : vol;
576
577         return 0;
578 }
579
580 /* OK - TODO: test it */
581 static int snd_cx88_volume_put(struct snd_kcontrol *kcontrol,
582                                struct snd_ctl_elem_value *value)
583 {
584         snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
585         struct cx88_core *core=chip->core;
586         int v, b;
587         int changed = 0;
588         u32 old;
589
590         b = value->value.integer.value[1] - value->value.integer.value[0];
591         if (b < 0) {
592             v = 0x3f - value->value.integer.value[0];
593             b = (-b) | 0x40;
594         } else {
595             v = 0x3f - value->value.integer.value[1];
596         }
597         /* Do we really know this will always be called with IRQs on? */
598         spin_lock_irq(&chip->reg_lock);
599         old = cx_read(AUD_VOL_CTL);
600         if (v != (old & 0x3f)) {
601             cx_write(AUD_VOL_CTL, (old & ~0x3f) | v);
602             changed = 1;
603         }
604         if (cx_read(AUD_BAL_CTL) != b) {
605             cx_write(AUD_BAL_CTL, b);
606             changed = 1;
607         }
608         spin_unlock_irq(&chip->reg_lock);
609
610         return changed;
611 }
612
613 static const DECLARE_TLV_DB_SCALE(snd_cx88_db_scale, -6300, 100, 0);
614
615 static struct snd_kcontrol_new snd_cx88_volume = {
616         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
617         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
618                   SNDRV_CTL_ELEM_ACCESS_TLV_READ,
619         .name = "Playback Volume",
620         .info = snd_cx88_volume_info,
621         .get = snd_cx88_volume_get,
622         .put = snd_cx88_volume_put,
623         .tlv.p = snd_cx88_db_scale,
624 };
625
626 static int snd_cx88_switch_get(struct snd_kcontrol *kcontrol,
627                                struct snd_ctl_elem_value *value)
628 {
629         snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
630         struct cx88_core *core = chip->core;
631         u32 bit = kcontrol->private_value;
632
633         value->value.integer.value[0] = !(cx_read(AUD_VOL_CTL) & bit);
634         return 0;
635 }
636
637 static int snd_cx88_switch_put(struct snd_kcontrol *kcontrol,
638                                        struct snd_ctl_elem_value *value)
639 {
640         snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
641         struct cx88_core *core = chip->core;
642         u32 bit = kcontrol->private_value;
643         int ret = 0;
644         u32 vol;
645
646         spin_lock_irq(&chip->reg_lock);
647         vol = cx_read(AUD_VOL_CTL);
648         if (value->value.integer.value[0] != !(vol & bit)) {
649                 vol ^= bit;
650                 cx_write(AUD_VOL_CTL, vol);
651                 ret = 1;
652         }
653         spin_unlock_irq(&chip->reg_lock);
654         return ret;
655 }
656
657 static struct snd_kcontrol_new snd_cx88_dac_switch = {
658         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
659         .name = "Playback Switch",
660         .info = snd_ctl_boolean_mono_info,
661         .get = snd_cx88_switch_get,
662         .put = snd_cx88_switch_put,
663         .private_value = (1<<8),
664 };
665
666 static struct snd_kcontrol_new snd_cx88_source_switch = {
667         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
668         .name = "Capture Switch",
669         .info = snd_ctl_boolean_mono_info,
670         .get = snd_cx88_switch_get,
671         .put = snd_cx88_switch_put,
672         .private_value = (1<<6),
673 };
674
675 /****************************************************************************
676                         Basic Flow for Sound Devices
677  ****************************************************************************/
678
679 /*
680  * PCI ID Table - 14f1:8801 and 14f1:8811 means function 1: Audio
681  * Only boards with eeprom and byte 1 at eeprom=1 have it
682  */
683
684 static struct pci_device_id cx88_audio_pci_tbl[] __devinitdata = {
685         {0x14f1,0x8801,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
686         {0x14f1,0x8811,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
687         {0, }
688 };
689 MODULE_DEVICE_TABLE(pci, cx88_audio_pci_tbl);
690
691 /*
692  * Chip-specific destructor
693  */
694
695 static int snd_cx88_free(snd_cx88_card_t *chip)
696 {
697
698         if (chip->irq >= 0)
699                 free_irq(chip->irq, chip);
700
701         cx88_core_put(chip->core,chip->pci);
702
703         pci_disable_device(chip->pci);
704         return 0;
705 }
706
707 /*
708  * Component Destructor
709  */
710 static void snd_cx88_dev_free(struct snd_card * card)
711 {
712         snd_cx88_card_t *chip = card->private_data;
713
714         snd_cx88_free(chip);
715 }
716
717
718 /*
719  * Alsa Constructor - Component probe
720  */
721
722 static int devno;
723 static int __devinit snd_cx88_create(struct snd_card *card,
724                                      struct pci_dev *pci,
725                                      snd_cx88_card_t **rchip)
726 {
727         snd_cx88_card_t   *chip;
728         struct cx88_core  *core;
729         int               err;
730         unsigned char     pci_lat;
731
732         *rchip = NULL;
733
734         err = pci_enable_device(pci);
735         if (err < 0)
736                 return err;
737
738         pci_set_master(pci);
739
740         chip = (snd_cx88_card_t *) card->private_data;
741
742         core = cx88_core_get(pci);
743         if (NULL == core) {
744                 err = -EINVAL;
745                 return err;
746         }
747
748         if (!pci_dma_supported(pci,DMA_BIT_MASK(32))) {
749                 dprintk(0, "%s/1: Oops: no 32bit PCI DMA ???\n",core->name);
750                 err = -EIO;
751                 cx88_core_put(core,pci);
752                 return err;
753         }
754
755
756         /* pci init */
757         chip->card = card;
758         chip->pci = pci;
759         chip->irq = -1;
760         spin_lock_init(&chip->reg_lock);
761
762         chip->core = core;
763
764         /* get irq */
765         err = request_irq(chip->pci->irq, cx8801_irq,
766                           IRQF_SHARED | IRQF_DISABLED, chip->core->name, chip);
767         if (err < 0) {
768                 dprintk(0, "%s: can't get IRQ %d\n",
769                        chip->core->name, chip->pci->irq);
770                 return err;
771         }
772
773         /* print pci info */
774         pci_read_config_byte(pci, PCI_LATENCY_TIMER, &pci_lat);
775
776         dprintk(1,"ALSA %s/%i: found at %s, rev: %d, irq: %d, "
777                "latency: %d, mmio: 0x%llx\n", core->name, devno,
778                pci_name(pci), pci->revision, pci->irq,
779                pci_lat, (unsigned long long)pci_resource_start(pci,0));
780
781         chip->irq = pci->irq;
782         synchronize_irq(chip->irq);
783
784         snd_card_set_dev(card, &pci->dev);
785
786         *rchip = chip;
787
788         return 0;
789 }
790
791 static int __devinit cx88_audio_initdev(struct pci_dev *pci,
792                                     const struct pci_device_id *pci_id)
793 {
794         struct snd_card  *card;
795         snd_cx88_card_t  *chip;
796         int              err;
797
798         if (devno >= SNDRV_CARDS)
799                 return (-ENODEV);
800
801         if (!enable[devno]) {
802                 ++devno;
803                 return (-ENOENT);
804         }
805
806         err = snd_card_create(index[devno], id[devno], THIS_MODULE,
807                               sizeof(snd_cx88_card_t), &card);
808         if (err < 0)
809                 return err;
810
811         card->private_free = snd_cx88_dev_free;
812
813         err = snd_cx88_create(card, pci, &chip);
814         if (err < 0)
815                 goto error;
816
817         err = snd_cx88_pcm(chip, 0, "CX88 Digital");
818         if (err < 0)
819                 goto error;
820
821         err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_volume, chip));
822         if (err < 0)
823                 goto error;
824         err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_dac_switch, chip));
825         if (err < 0)
826                 goto error;
827         err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_source_switch, chip));
828         if (err < 0)
829                 goto error;
830
831         strcpy (card->driver, "CX88x");
832         sprintf(card->shortname, "Conexant CX%x", pci->device);
833         sprintf(card->longname, "%s at %#llx",
834                 card->shortname,(unsigned long long)pci_resource_start(pci, 0));
835         strcpy (card->mixername, "CX88");
836
837         dprintk (0, "%s/%i: ALSA support for cx2388x boards\n",
838                card->driver,devno);
839
840         err = snd_card_register(card);
841         if (err < 0)
842                 goto error;
843         pci_set_drvdata(pci,card);
844
845         devno++;
846         return 0;
847
848 error:
849         snd_card_free(card);
850         return err;
851 }
852 /*
853  * ALSA destructor
854  */
855 static void __devexit cx88_audio_finidev(struct pci_dev *pci)
856 {
857         struct cx88_audio_dev *card = pci_get_drvdata(pci);
858
859         snd_card_free((void *)card);
860
861         pci_set_drvdata(pci, NULL);
862
863         devno--;
864 }
865
866 /*
867  * PCI driver definition
868  */
869
870 static struct pci_driver cx88_audio_pci_driver = {
871         .name     = "cx88_audio",
872         .id_table = cx88_audio_pci_tbl,
873         .probe    = cx88_audio_initdev,
874         .remove   = __devexit_p(cx88_audio_finidev),
875 };
876
877 /****************************************************************************
878                                 LINUX MODULE INIT
879  ****************************************************************************/
880
881 /*
882  * module init
883  */
884 static int __init cx88_audio_init(void)
885 {
886         printk(KERN_INFO "cx2388x alsa driver version %d.%d.%d loaded\n",
887                (CX88_VERSION_CODE >> 16) & 0xff,
888                (CX88_VERSION_CODE >>  8) & 0xff,
889                CX88_VERSION_CODE & 0xff);
890 #ifdef SNAPSHOT
891         printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
892                SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
893 #endif
894         return pci_register_driver(&cx88_audio_pci_driver);
895 }
896
897 /*
898  * module remove
899  */
900 static void __exit cx88_audio_fini(void)
901 {
902         pci_unregister_driver(&cx88_audio_pci_driver);
903 }
904
905 module_init(cx88_audio_init);
906 module_exit(cx88_audio_fini);
907
908 /* ----------------------------------------------------------- */
909 /*
910  * Local variables:
911  * c-basic-offset: 8
912  * End:
913  */