V4L/DVB (6187): cx88-alsa: Add TLV support
[linux-2.6] / 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/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 #include <sound/tlv.h>
43
44 #include "cx88.h"
45 #include "cx88-reg.h"
46
47 #define dprintk(level,fmt, arg...)      if (debug >= level) \
48         printk(KERN_INFO "%s/1: " fmt, chip->core->name , ## arg)
49
50 #define dprintk_core(level,fmt, arg...) if (debug >= level) \
51         printk(KERN_DEBUG "%s/1: " fmt, chip->core->name , ## arg)
52
53 /****************************************************************************
54         Data type declarations - Can be moded to a header file later
55  ****************************************************************************/
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
64         /* audio controls */
65         int                        irq;
66
67         struct snd_card            *card;
68
69         spinlock_t                 reg_lock;
70         atomic_t                   count;
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         struct cx88_buffer         *buf;
79
80         struct snd_pcm_substream   *substream;
81 };
82 typedef struct cx88_audio_dev snd_cx88_card_t;
83
84
85
86
87 /****************************************************************************
88                         Module global static vars
89  ****************************************************************************/
90
91 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
92 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
93 static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 1};
94
95 module_param_array(enable, bool, NULL, 0444);
96 MODULE_PARM_DESC(enable, "Enable cx88x soundcard. default enabled.");
97
98 module_param_array(index, int, NULL, 0444);
99 MODULE_PARM_DESC(index, "Index value for cx88x capture interface(s).");
100
101
102 /****************************************************************************
103                                 Module macros
104  ****************************************************************************/
105
106 MODULE_DESCRIPTION("ALSA driver module for cx2388x based TV cards");
107 MODULE_AUTHOR("Ricardo Cerqueira");
108 MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
109 MODULE_LICENSE("GPL");
110 MODULE_SUPPORTED_DEVICE("{{Conexant,23881},"
111                         "{{Conexant,23882},"
112                         "{{Conexant,23883}");
113 static unsigned int debug;
114 module_param(debug,int,0644);
115 MODULE_PARM_DESC(debug,"enable debug messages");
116
117 /****************************************************************************
118                         Module specific funtions
119  ****************************************************************************/
120
121 /*
122  * BOARD Specific: Sets audio DMA
123  */
124
125 static int _cx88_start_audio_dma(snd_cx88_card_t *chip)
126 {
127         struct cx88_buffer   *buf = chip->buf;
128         struct cx88_core *core=chip->core;
129         struct sram_channel *audio_ch = &cx88_sram_channels[SRAM_CH25];
130
131         /* Make sure RISC/FIFO are off before changing FIFO/RISC settings */
132         cx_clear(MO_AUD_DMACNTRL, 0x11);
133
134         /* setup fifo + format - out channel */
135         cx88_sram_channel_setup(chip->core, audio_ch, buf->bpl, buf->risc.dma);
136
137         /* sets bpl size */
138         cx_write(MO_AUDD_LNGTH, buf->bpl);
139
140         /* reset counter */
141         cx_write(MO_AUDD_GPCNTRL, GP_COUNT_CONTROL_RESET);
142         atomic_set(&chip->count, 0);
143
144         dprintk(1, "Start audio DMA, %d B/line, %d lines/FIFO, %d periods, %d "
145                 "byte buffer\n", buf->bpl, cx_read(audio_ch->cmds_start + 8)>>1,
146                 chip->num_periods, buf->bpl * chip->num_periods);
147
148         /* Enables corresponding bits at AUD_INT_STAT */
149         cx_write(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC |
150                                 AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1);
151
152         /* Clean any pending interrupt bits already set */
153         cx_write(MO_AUD_INTSTAT, ~0);
154
155         /* enable audio irqs */
156         cx_set(MO_PCI_INTMSK, chip->core->pci_irqmask | PCI_INT_AUDINT);
157
158         /* start dma */
159         cx_set(MO_DEV_CNTRL2, (1<<5)); /* Enables Risc Processor */
160         cx_set(MO_AUD_DMACNTRL, 0x11); /* audio downstream FIFO and RISC enable */
161
162         if (debug)
163                 cx88_sram_channel_dump(chip->core, audio_ch);
164
165         return 0;
166 }
167
168 /*
169  * BOARD Specific: Resets audio DMA
170  */
171 static int _cx88_stop_audio_dma(snd_cx88_card_t *chip)
172 {
173         struct cx88_core *core=chip->core;
174         dprintk(1, "Stopping audio DMA\n");
175
176         /* stop dma */
177         cx_clear(MO_AUD_DMACNTRL, 0x11);
178
179         /* disable irqs */
180         cx_clear(MO_PCI_INTMSK, PCI_INT_AUDINT);
181         cx_clear(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC |
182                                 AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1);
183
184         if (debug)
185                 cx88_sram_channel_dump(chip->core, &cx88_sram_channels[SRAM_CH25]);
186
187         return 0;
188 }
189
190 #define MAX_IRQ_LOOP 50
191
192 /*
193  * BOARD Specific: IRQ dma bits
194  */
195 static char *cx88_aud_irqs[32] = {
196         "dn_risci1", "up_risci1", "rds_dn_risc1", /* 0-2 */
197         NULL,                                     /* reserved */
198         "dn_risci2", "up_risci2", "rds_dn_risc2", /* 4-6 */
199         NULL,                                     /* reserved */
200         "dnf_of", "upf_uf", "rds_dnf_uf",         /* 8-10 */
201         NULL,                                     /* reserved */
202         "dn_sync", "up_sync", "rds_dn_sync",      /* 12-14 */
203         NULL,                                     /* reserved */
204         "opc_err", "par_err", "rip_err",          /* 16-18 */
205         "pci_abort", "ber_irq", "mchg_irq"        /* 19-21 */
206 };
207
208 /*
209  * BOARD Specific: Threats IRQ audio specific calls
210  */
211 static void cx8801_aud_irq(snd_cx88_card_t *chip)
212 {
213         struct cx88_core *core = chip->core;
214         u32 status, mask;
215
216         status = cx_read(MO_AUD_INTSTAT);
217         mask   = cx_read(MO_AUD_INTMSK);
218         if (0 == (status & mask))
219                 return;
220         cx_write(MO_AUD_INTSTAT, status);
221         if (debug > 1  ||  (status & mask & ~0xff))
222                 cx88_print_irqbits(core->name, "irq aud",
223                                    cx88_aud_irqs, ARRAY_SIZE(cx88_aud_irqs),
224                                    status, mask);
225         /* risc op code error */
226         if (status & AUD_INT_OPC_ERR) {
227                 printk(KERN_WARNING "%s/1: Audio risc op code error\n",core->name);
228                 cx_clear(MO_AUD_DMACNTRL, 0x11);
229                 cx88_sram_channel_dump(core, &cx88_sram_channels[SRAM_CH25]);
230         }
231         if (status & AUD_INT_DN_SYNC) {
232                 dprintk(1, "Downstream sync error\n");
233                 cx_write(MO_AUDD_GPCNTRL, GP_COUNT_CONTROL_RESET);
234                 return;
235         }
236         /* risc1 downstream */
237         if (status & AUD_INT_DN_RISCI1) {
238                 atomic_set(&chip->count, cx_read(MO_AUDD_GPCNT));
239                 snd_pcm_period_elapsed(chip->substream);
240         }
241         /* FIXME: Any other status should deserve a special handling? */
242 }
243
244 /*
245  * BOARD Specific: Handles IRQ calls
246  */
247 static irqreturn_t cx8801_irq(int irq, void *dev_id)
248 {
249         snd_cx88_card_t *chip = dev_id;
250         struct cx88_core *core = chip->core;
251         u32 status;
252         int loop, handled = 0;
253
254         for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
255                 status = cx_read(MO_PCI_INTSTAT) &
256                         (core->pci_irqmask | PCI_INT_AUDINT);
257                 if (0 == status)
258                         goto out;
259                 dprintk(3, "cx8801_irq loop %d/%d, status %x\n",
260                         loop, MAX_IRQ_LOOP, status);
261                 handled = 1;
262                 cx_write(MO_PCI_INTSTAT, status);
263
264                 if (status & core->pci_irqmask)
265                         cx88_core_irq(core, status);
266                 if (status & PCI_INT_AUDINT)
267                         cx8801_aud_irq(chip);
268         }
269
270         if (MAX_IRQ_LOOP == loop) {
271                 printk(KERN_ERR
272                        "%s/1: IRQ loop detected, disabling interrupts\n",
273                        core->name);
274                 cx_clear(MO_PCI_INTMSK, PCI_INT_AUDINT);
275         }
276
277  out:
278         return IRQ_RETVAL(handled);
279 }
280
281
282 static int dsp_buffer_free(snd_cx88_card_t *chip)
283 {
284         BUG_ON(!chip->dma_size);
285
286         dprintk(2,"Freeing buffer\n");
287         videobuf_pci_dma_unmap(chip->pci, chip->dma_risc);
288         videobuf_dma_free(chip->dma_risc);
289         btcx_riscmem_free(chip->pci,&chip->buf->risc);
290         kfree(chip->buf);
291
292         chip->dma_risc = NULL;
293         chip->dma_size = 0;
294
295         return 0;
296 }
297
298 /****************************************************************************
299                                 ALSA PCM Interface
300  ****************************************************************************/
301
302 /*
303  * Digital hardware definition
304  */
305 #define DEFAULT_FIFO_SIZE       4096
306 static struct snd_pcm_hardware snd_cx88_digital_hw = {
307         .info = SNDRV_PCM_INFO_MMAP |
308                 SNDRV_PCM_INFO_INTERLEAVED |
309                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
310                 SNDRV_PCM_INFO_MMAP_VALID,
311         .formats = SNDRV_PCM_FMTBIT_S16_LE,
312
313         .rates =                SNDRV_PCM_RATE_48000,
314         .rate_min =             48000,
315         .rate_max =             48000,
316         .channels_min = 2,
317         .channels_max = 2,
318         /* Analog audio output will be full of clicks and pops if there
319            are not exactly four lines in the SRAM FIFO buffer.  */
320         .period_bytes_min = DEFAULT_FIFO_SIZE/4,
321         .period_bytes_max = DEFAULT_FIFO_SIZE/4,
322         .periods_min = 1,
323         .periods_max = 1024,
324         .buffer_bytes_max = (1024*1024),
325 };
326
327 /*
328  * audio pcm capture open callback
329  */
330 static int snd_cx88_pcm_open(struct snd_pcm_substream *substream)
331 {
332         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
333         struct snd_pcm_runtime *runtime = substream->runtime;
334         int err;
335
336         err = snd_pcm_hw_constraint_pow2(runtime, 0, SNDRV_PCM_HW_PARAM_PERIODS);
337         if (err < 0)
338                 goto _error;
339
340         chip->substream = substream;
341
342         runtime->hw = snd_cx88_digital_hw;
343
344         if (cx88_sram_channels[SRAM_CH25].fifo_size != DEFAULT_FIFO_SIZE) {
345                 unsigned int bpl = cx88_sram_channels[SRAM_CH25].fifo_size / 4;
346                 bpl &= ~7; /* must be multiple of 8 */
347                 runtime->hw.period_bytes_min = bpl;
348                 runtime->hw.period_bytes_max = bpl;
349         }
350
351         return 0;
352 _error:
353         dprintk(1,"Error opening PCM!\n");
354         return err;
355 }
356
357 /*
358  * audio close callback
359  */
360 static int snd_cx88_close(struct snd_pcm_substream *substream)
361 {
362         return 0;
363 }
364
365 /*
366  * hw_params callback
367  */
368 static int snd_cx88_hw_params(struct snd_pcm_substream * substream,
369                               struct snd_pcm_hw_params * hw_params)
370 {
371         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
372         struct videobuf_dmabuf *dma;
373
374         struct cx88_buffer *buf;
375         int ret;
376
377         if (substream->runtime->dma_area) {
378                 dsp_buffer_free(chip);
379                 substream->runtime->dma_area = NULL;
380         }
381
382         chip->period_size = params_period_bytes(hw_params);
383         chip->num_periods = params_periods(hw_params);
384         chip->dma_size = chip->period_size * params_periods(hw_params);
385
386         BUG_ON(!chip->dma_size);
387         BUG_ON(chip->num_periods & (chip->num_periods-1));
388
389         buf = videobuf_pci_alloc(sizeof(*buf));
390         if (NULL == buf)
391                 return -ENOMEM;
392
393         buf->vb.memory = V4L2_MEMORY_MMAP;
394         buf->vb.field  = V4L2_FIELD_NONE;
395         buf->vb.width  = chip->period_size;
396         buf->bpl       = chip->period_size;
397         buf->vb.height = chip->num_periods;
398         buf->vb.size   = chip->dma_size;
399
400         dma=videobuf_to_dma(&buf->vb);
401         videobuf_dma_init(dma);
402         ret = videobuf_dma_init_kernel(dma, PCI_DMA_FROMDEVICE,
403                         (PAGE_ALIGN(buf->vb.size) >> PAGE_SHIFT));
404         if (ret < 0)
405                 goto error;
406
407         ret = videobuf_pci_dma_map(chip->pci,dma);
408         if (ret < 0)
409                 goto error;
410
411         ret = cx88_risc_databuffer(chip->pci, &buf->risc, dma->sglist,
412                                    buf->vb.width, buf->vb.height, 1);
413         if (ret < 0)
414                 goto error;
415
416         /* Loop back to start of program */
417         buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP|RISC_IRQ1|RISC_CNT_INC);
418         buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
419
420         buf->vb.state = STATE_PREPARED;
421
422         chip->buf = buf;
423         chip->dma_risc = dma;
424
425         substream->runtime->dma_area = chip->dma_risc->vmalloc;
426         substream->runtime->dma_bytes = chip->dma_size;
427         substream->runtime->dma_addr = 0;
428         return 0;
429
430 error:
431         kfree(buf);
432         return ret;
433 }
434
435 /*
436  * hw free callback
437  */
438 static int snd_cx88_hw_free(struct snd_pcm_substream * substream)
439 {
440
441         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
442
443         if (substream->runtime->dma_area) {
444                 dsp_buffer_free(chip);
445                 substream->runtime->dma_area = NULL;
446         }
447
448         return 0;
449 }
450
451 /*
452  * prepare callback
453  */
454 static int snd_cx88_prepare(struct snd_pcm_substream *substream)
455 {
456         return 0;
457 }
458
459 /*
460  * trigger callback
461  */
462 static int snd_cx88_card_trigger(struct snd_pcm_substream *substream, int cmd)
463 {
464         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
465         int err;
466
467         /* Local interrupts are already disabled by ALSA */
468         spin_lock(&chip->reg_lock);
469
470         switch (cmd) {
471         case SNDRV_PCM_TRIGGER_START:
472                 err=_cx88_start_audio_dma(chip);
473                 break;
474         case SNDRV_PCM_TRIGGER_STOP:
475                 err=_cx88_stop_audio_dma(chip);
476                 break;
477         default:
478                 err=-EINVAL;
479                 break;
480         }
481
482         spin_unlock(&chip->reg_lock);
483
484         return err;
485 }
486
487 /*
488  * pointer callback
489  */
490 static snd_pcm_uframes_t snd_cx88_pointer(struct snd_pcm_substream *substream)
491 {
492         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
493         struct snd_pcm_runtime *runtime = substream->runtime;
494         u16 count;
495
496         count = atomic_read(&chip->count);
497
498 //      dprintk(2, "%s - count %d (+%u), period %d, frame %lu\n", __FUNCTION__,
499 //              count, new, count & (runtime->periods-1),
500 //              runtime->period_size * (count & (runtime->periods-1)));
501         return runtime->period_size * (count & (runtime->periods-1));
502 }
503
504 /*
505  * page callback (needed for mmap)
506  */
507 static struct page *snd_cx88_page(struct snd_pcm_substream *substream,
508                                 unsigned long offset)
509 {
510         void *pageptr = substream->runtime->dma_area + offset;
511         return vmalloc_to_page(pageptr);
512 }
513
514 /*
515  * operators
516  */
517 static struct snd_pcm_ops snd_cx88_pcm_ops = {
518         .open = snd_cx88_pcm_open,
519         .close = snd_cx88_close,
520         .ioctl = snd_pcm_lib_ioctl,
521         .hw_params = snd_cx88_hw_params,
522         .hw_free = snd_cx88_hw_free,
523         .prepare = snd_cx88_prepare,
524         .trigger = snd_cx88_card_trigger,
525         .pointer = snd_cx88_pointer,
526         .page = snd_cx88_page,
527 };
528
529 /*
530  * create a PCM device
531  */
532 static int __devinit snd_cx88_pcm(snd_cx88_card_t *chip, int device, char *name)
533 {
534         int err;
535         struct snd_pcm *pcm;
536
537         err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm);
538         if (err < 0)
539                 return err;
540         pcm->private_data = chip;
541         strcpy(pcm->name, name);
542         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cx88_pcm_ops);
543
544         return 0;
545 }
546
547 /****************************************************************************
548                                 CONTROL INTERFACE
549  ****************************************************************************/
550 static int snd_cx88_volume_info(struct snd_kcontrol *kcontrol,
551                                 struct snd_ctl_elem_info *info)
552 {
553         info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
554         info->count = 2;
555         info->value.integer.min = 0;
556         info->value.integer.max = 0x3f;
557
558         return 0;
559 }
560
561 static int snd_cx88_volume_get(struct snd_kcontrol *kcontrol,
562                                struct snd_ctl_elem_value *value)
563 {
564         snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
565         struct cx88_core *core=chip->core;
566         int vol = 0x3f - (cx_read(AUD_VOL_CTL) & 0x3f),
567             bal = cx_read(AUD_BAL_CTL);
568
569         value->value.integer.value[(bal & 0x40) ? 0 : 1] = vol;
570         vol -= (bal & 0x3f);
571         value->value.integer.value[(bal & 0x40) ? 1 : 0] = vol < 0 ? 0 : vol;
572
573         return 0;
574 }
575
576 /* OK - TODO: test it */
577 static int snd_cx88_volume_put(struct snd_kcontrol *kcontrol,
578                                struct snd_ctl_elem_value *value)
579 {
580         snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
581         struct cx88_core *core=chip->core;
582         int v, b;
583         int changed = 0;
584         u32 old;
585
586         b = value->value.integer.value[1] - value->value.integer.value[0];
587         if (b < 0) {
588             v = 0x3f - value->value.integer.value[0];
589             b = (-b) | 0x40;
590         } else {
591             v = 0x3f - value->value.integer.value[1];
592         }
593         /* Do we really know this will always be called with IRQs on? */
594         spin_lock_irq(&chip->reg_lock);
595         old = cx_read(AUD_VOL_CTL);
596         if (v != (old & 0x3f)) {
597             cx_write(AUD_VOL_CTL, (old & ~0x3f) | v);
598             changed = 1;
599         }
600         if (cx_read(AUD_BAL_CTL) != b) {
601             cx_write(AUD_BAL_CTL, b);
602             changed = 1;
603         }
604         spin_unlock_irq(&chip->reg_lock);
605
606         return changed;
607 }
608
609 static const DECLARE_TLV_DB_SCALE(snd_cx88_db_scale, -6300, 100, 0);
610
611 static struct snd_kcontrol_new snd_cx88_volume = {
612         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
613         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
614                   SNDRV_CTL_ELEM_ACCESS_TLV_READ,
615         .name = "Playback Volume",
616         .info = snd_cx88_volume_info,
617         .get = snd_cx88_volume_get,
618         .put = snd_cx88_volume_put,
619         .tlv.p = snd_cx88_db_scale,
620 };
621
622 static int snd_cx88_switch_get(struct snd_kcontrol *kcontrol,
623                                struct snd_ctl_elem_value *value)
624 {
625         snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
626         struct cx88_core *core = chip->core;
627         u32 bit = kcontrol->private_value;
628
629         value->value.integer.value[0] = !(cx_read(AUD_VOL_CTL) & bit);
630         return 0;
631 }
632
633 static int snd_cx88_switch_put(struct snd_kcontrol *kcontrol,
634                                        struct snd_ctl_elem_value *value)
635 {
636         snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
637         struct cx88_core *core = chip->core;
638         u32 bit = kcontrol->private_value;
639         int ret = 0;
640         u32 vol;
641
642         spin_lock_irq(&chip->reg_lock);
643         vol = cx_read(AUD_VOL_CTL);
644         if (value->value.integer.value[0] != !(vol & bit)) {
645                 vol ^= bit;
646                 cx_write(AUD_VOL_CTL, vol);
647                 ret = 1;
648         }
649         spin_unlock_irq(&chip->reg_lock);
650         return ret;
651 }
652
653 static struct snd_kcontrol_new snd_cx88_dac_switch = {
654         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
655         .name = "Playback Switch",
656         .info = snd_ctl_boolean_mono_info,
657         .get = snd_cx88_switch_get,
658         .put = snd_cx88_switch_put,
659         .private_value = (1<<8),
660 };
661
662 static struct snd_kcontrol_new snd_cx88_source_switch = {
663         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
664         .name = "Capture Switch",
665         .info = snd_ctl_boolean_mono_info,
666         .get = snd_cx88_switch_get,
667         .put = snd_cx88_switch_put,
668         .private_value = (1<<6),
669 };
670
671 /****************************************************************************
672                         Basic Flow for Sound Devices
673  ****************************************************************************/
674
675 /*
676  * PCI ID Table - 14f1:8801 and 14f1:8811 means function 1: Audio
677  * Only boards with eeprom and byte 1 at eeprom=1 have it
678  */
679
680 static struct pci_device_id cx88_audio_pci_tbl[] __devinitdata = {
681         {0x14f1,0x8801,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
682         {0x14f1,0x8811,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
683         {0, }
684 };
685 MODULE_DEVICE_TABLE(pci, cx88_audio_pci_tbl);
686
687 /*
688  * Chip-specific destructor
689  */
690
691 static int snd_cx88_free(snd_cx88_card_t *chip)
692 {
693
694         if (chip->irq >= 0){
695                 synchronize_irq(chip->irq);
696                 free_irq(chip->irq, chip);
697         }
698
699         cx88_core_put(chip->core,chip->pci);
700
701         pci_disable_device(chip->pci);
702         return 0;
703 }
704
705 /*
706  * Component Destructor
707  */
708 static void snd_cx88_dev_free(struct snd_card * card)
709 {
710         snd_cx88_card_t *chip = card->private_data;
711
712         snd_cx88_free(chip);
713 }
714
715
716 /*
717  * Alsa Constructor - Component probe
718  */
719
720 static int devno;
721 static int __devinit snd_cx88_create(struct snd_card *card,
722                                      struct pci_dev *pci,
723                                      snd_cx88_card_t **rchip)
724 {
725         snd_cx88_card_t   *chip;
726         struct cx88_core  *core;
727         int               err;
728         unsigned char     pci_lat;
729
730         *rchip = NULL;
731
732         err = pci_enable_device(pci);
733         if (err < 0)
734                 return err;
735
736         pci_set_master(pci);
737
738         chip = (snd_cx88_card_t *) card->private_data;
739
740         core = cx88_core_get(pci);
741         if (NULL == core) {
742                 err = -EINVAL;
743                 kfree (chip);
744                 return err;
745         }
746
747         if (!pci_dma_supported(pci,DMA_32BIT_MASK)) {
748                 dprintk(0, "%s/1: Oops: no 32bit PCI DMA ???\n",core->name);
749                 err = -EIO;
750                 cx88_core_put(core,pci);
751                 return err;
752         }
753
754
755         /* pci init */
756         chip->card = card;
757         chip->pci = pci;
758         chip->irq = -1;
759         spin_lock_init(&chip->reg_lock);
760
761         chip->core = core;
762
763         /* get irq */
764         err = request_irq(chip->pci->irq, cx8801_irq,
765                           IRQF_SHARED | IRQF_DISABLED, chip->core->name, chip);
766         if (err < 0) {
767                 dprintk(0, "%s: can't get IRQ %d\n",
768                        chip->core->name, chip->pci->irq);
769                 return err;
770         }
771
772         /* print pci info */
773         pci_read_config_byte(pci, PCI_LATENCY_TIMER, &pci_lat);
774
775         dprintk(1,"ALSA %s/%i: found at %s, rev: %d, irq: %d, "
776                "latency: %d, mmio: 0x%llx\n", core->name, devno,
777                pci_name(pci), pci->revision, pci->irq,
778                pci_lat, (unsigned long long)pci_resource_start(pci,0));
779
780         chip->irq = pci->irq;
781         synchronize_irq(chip->irq);
782
783         snd_card_set_dev(card, &pci->dev);
784
785         *rchip = chip;
786
787         return 0;
788 }
789
790 static int __devinit cx88_audio_initdev(struct pci_dev *pci,
791                                     const struct pci_device_id *pci_id)
792 {
793         struct snd_card  *card;
794         snd_cx88_card_t  *chip;
795         int              err;
796
797         if (devno >= SNDRV_CARDS)
798                 return (-ENODEV);
799
800         if (!enable[devno]) {
801                 ++devno;
802                 return (-ENOENT);
803         }
804
805         card = snd_card_new(index[devno], id[devno], THIS_MODULE, sizeof(snd_cx88_card_t));
806         if (!card)
807                 return (-ENOMEM);
808
809         card->private_free = snd_cx88_dev_free;
810
811         err = snd_cx88_create(card, pci, &chip);
812         if (err < 0)
813                 return (err);
814
815         err = snd_cx88_pcm(chip, 0, "CX88 Digital");
816         if (err < 0)
817                 goto error;
818
819         err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_volume, chip));
820         if (err < 0)
821                 goto error;
822         err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_dac_switch, chip));
823         if (err < 0)
824                 goto error;
825         err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_source_switch, chip));
826         if (err < 0)
827                 goto error;
828
829         strcpy (card->driver, "CX88x");
830         sprintf(card->shortname, "Conexant CX%x", pci->device);
831         sprintf(card->longname, "%s at %#llx",
832                 card->shortname,(unsigned long long)pci_resource_start(pci, 0));
833         strcpy (card->mixername, "CX88");
834
835         dprintk (0, "%s/%i: ALSA support for cx2388x boards\n",
836                card->driver,devno);
837
838         err = snd_card_register(card);
839         if (err < 0)
840                 goto error;
841         pci_set_drvdata(pci,card);
842
843         devno++;
844         return 0;
845
846 error:
847         snd_card_free(card);
848         return err;
849 }
850 /*
851  * ALSA destructor
852  */
853 static void __devexit cx88_audio_finidev(struct pci_dev *pci)
854 {
855         struct cx88_audio_dev *card = pci_get_drvdata(pci);
856
857         snd_card_free((void *)card);
858
859         pci_set_drvdata(pci, NULL);
860
861         devno--;
862 }
863
864 /*
865  * PCI driver definition
866  */
867
868 static struct pci_driver cx88_audio_pci_driver = {
869         .name     = "cx88_audio",
870         .id_table = cx88_audio_pci_tbl,
871         .probe    = cx88_audio_initdev,
872         .remove   = cx88_audio_finidev,
873 };
874
875 /****************************************************************************
876                                 LINUX MODULE INIT
877  ****************************************************************************/
878
879 /*
880  * module init
881  */
882 static int cx88_audio_init(void)
883 {
884         printk(KERN_INFO "cx2388x alsa driver version %d.%d.%d loaded\n",
885                (CX88_VERSION_CODE >> 16) & 0xff,
886                (CX88_VERSION_CODE >>  8) & 0xff,
887                CX88_VERSION_CODE & 0xff);
888 #ifdef SNAPSHOT
889         printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
890                SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
891 #endif
892         return pci_register_driver(&cx88_audio_pci_driver);
893 }
894
895 /*
896  * module remove
897  */
898 static void cx88_audio_fini(void)
899 {
900
901         pci_unregister_driver(&cx88_audio_pci_driver);
902 }
903
904 module_init(cx88_audio_init);
905 module_exit(cx88_audio_fini);
906
907 /* ----------------------------------------------------------- */
908 /*
909  * Local variables:
910  * c-basic-offset: 8
911  * End:
912  */