V4L/DVB (8026): Avoids an OOPS if dev struct can't be successfully recovered
[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 /****************************************************************************
87                         Module global static vars
88  ****************************************************************************/
89
90 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
91 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
92 static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 1};
93
94 module_param_array(enable, bool, NULL, 0444);
95 MODULE_PARM_DESC(enable, "Enable cx88x soundcard. default enabled.");
96
97 module_param_array(index, int, NULL, 0444);
98 MODULE_PARM_DESC(index, "Index value for cx88x capture interface(s).");
99
100
101 /****************************************************************************
102                                 Module macros
103  ****************************************************************************/
104
105 MODULE_DESCRIPTION("ALSA driver module for cx2388x based TV cards");
106 MODULE_AUTHOR("Ricardo Cerqueira");
107 MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
108 MODULE_LICENSE("GPL");
109 MODULE_SUPPORTED_DEVICE("{{Conexant,23881},"
110                         "{{Conexant,23882},"
111                         "{{Conexant,23883}");
112 static unsigned int debug;
113 module_param(debug,int,0644);
114 MODULE_PARM_DESC(debug,"enable debug messages");
115
116 /****************************************************************************
117                         Module specific funtions
118  ****************************************************************************/
119
120 /*
121  * BOARD Specific: Sets audio DMA
122  */
123
124 static int _cx88_start_audio_dma(snd_cx88_card_t *chip)
125 {
126         struct cx88_buffer   *buf = chip->buf;
127         struct cx88_core *core=chip->core;
128         struct sram_channel *audio_ch = &cx88_sram_channels[SRAM_CH25];
129
130         /* Make sure RISC/FIFO are off before changing FIFO/RISC settings */
131         cx_clear(MO_AUD_DMACNTRL, 0x11);
132
133         /* setup fifo + format - out channel */
134         cx88_sram_channel_setup(chip->core, audio_ch, buf->bpl, buf->risc.dma);
135
136         /* sets bpl size */
137         cx_write(MO_AUDD_LNGTH, buf->bpl);
138
139         /* reset counter */
140         cx_write(MO_AUDD_GPCNTRL, GP_COUNT_CONTROL_RESET);
141         atomic_set(&chip->count, 0);
142
143         dprintk(1, "Start audio DMA, %d B/line, %d lines/FIFO, %d periods, %d "
144                 "byte buffer\n", buf->bpl, cx_read(audio_ch->cmds_start + 8)>>1,
145                 chip->num_periods, buf->bpl * chip->num_periods);
146
147         /* Enables corresponding bits at AUD_INT_STAT */
148         cx_write(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC |
149                                 AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1);
150
151         /* Clean any pending interrupt bits already set */
152         cx_write(MO_AUD_INTSTAT, ~0);
153
154         /* enable audio irqs */
155         cx_set(MO_PCI_INTMSK, chip->core->pci_irqmask | PCI_INT_AUDINT);
156
157         /* start dma */
158         cx_set(MO_DEV_CNTRL2, (1<<5)); /* Enables Risc Processor */
159         cx_set(MO_AUD_DMACNTRL, 0x11); /* audio downstream FIFO and RISC enable */
160
161         if (debug)
162                 cx88_sram_channel_dump(chip->core, audio_ch);
163
164         return 0;
165 }
166
167 /*
168  * BOARD Specific: Resets audio DMA
169  */
170 static int _cx88_stop_audio_dma(snd_cx88_card_t *chip)
171 {
172         struct cx88_core *core=chip->core;
173         dprintk(1, "Stopping audio DMA\n");
174
175         /* stop dma */
176         cx_clear(MO_AUD_DMACNTRL, 0x11);
177
178         /* disable irqs */
179         cx_clear(MO_PCI_INTMSK, PCI_INT_AUDINT);
180         cx_clear(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC |
181                                 AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1);
182
183         if (debug)
184                 cx88_sram_channel_dump(chip->core, &cx88_sram_channels[SRAM_CH25]);
185
186         return 0;
187 }
188
189 #define MAX_IRQ_LOOP 50
190
191 /*
192  * BOARD Specific: IRQ dma bits
193  */
194 static char *cx88_aud_irqs[32] = {
195         "dn_risci1", "up_risci1", "rds_dn_risc1", /* 0-2 */
196         NULL,                                     /* reserved */
197         "dn_risci2", "up_risci2", "rds_dn_risc2", /* 4-6 */
198         NULL,                                     /* reserved */
199         "dnf_of", "upf_uf", "rds_dnf_uf",         /* 8-10 */
200         NULL,                                     /* reserved */
201         "dn_sync", "up_sync", "rds_dn_sync",      /* 12-14 */
202         NULL,                                     /* reserved */
203         "opc_err", "par_err", "rip_err",          /* 16-18 */
204         "pci_abort", "ber_irq", "mchg_irq"        /* 19-21 */
205 };
206
207 /*
208  * BOARD Specific: Threats IRQ audio specific calls
209  */
210 static void cx8801_aud_irq(snd_cx88_card_t *chip)
211 {
212         struct cx88_core *core = chip->core;
213         u32 status, mask;
214
215         status = cx_read(MO_AUD_INTSTAT);
216         mask   = cx_read(MO_AUD_INTMSK);
217         if (0 == (status & mask))
218                 return;
219         cx_write(MO_AUD_INTSTAT, status);
220         if (debug > 1  ||  (status & mask & ~0xff))
221                 cx88_print_irqbits(core->name, "irq aud",
222                                    cx88_aud_irqs, ARRAY_SIZE(cx88_aud_irqs),
223                                    status, mask);
224         /* risc op code error */
225         if (status & AUD_INT_OPC_ERR) {
226                 printk(KERN_WARNING "%s/1: Audio risc op code error\n",core->name);
227                 cx_clear(MO_AUD_DMACNTRL, 0x11);
228                 cx88_sram_channel_dump(core, &cx88_sram_channels[SRAM_CH25]);
229         }
230         if (status & AUD_INT_DN_SYNC) {
231                 dprintk(1, "Downstream sync error\n");
232                 cx_write(MO_AUDD_GPCNTRL, GP_COUNT_CONTROL_RESET);
233                 return;
234         }
235         /* risc1 downstream */
236         if (status & AUD_INT_DN_RISCI1) {
237                 atomic_set(&chip->count, cx_read(MO_AUDD_GPCNT));
238                 snd_pcm_period_elapsed(chip->substream);
239         }
240         /* FIXME: Any other status should deserve a special handling? */
241 }
242
243 /*
244  * BOARD Specific: Handles IRQ calls
245  */
246 static irqreturn_t cx8801_irq(int irq, void *dev_id)
247 {
248         snd_cx88_card_t *chip = dev_id;
249         struct cx88_core *core = chip->core;
250         u32 status;
251         int loop, handled = 0;
252
253         for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
254                 status = cx_read(MO_PCI_INTSTAT) &
255                         (core->pci_irqmask | PCI_INT_AUDINT);
256                 if (0 == status)
257                         goto out;
258                 dprintk(3, "cx8801_irq loop %d/%d, status %x\n",
259                         loop, MAX_IRQ_LOOP, status);
260                 handled = 1;
261                 cx_write(MO_PCI_INTSTAT, status);
262
263                 if (status & core->pci_irqmask)
264                         cx88_core_irq(core, status);
265                 if (status & PCI_INT_AUDINT)
266                         cx8801_aud_irq(chip);
267         }
268
269         if (MAX_IRQ_LOOP == loop) {
270                 printk(KERN_ERR
271                        "%s/1: IRQ loop detected, disabling interrupts\n",
272                        core->name);
273                 cx_clear(MO_PCI_INTMSK, PCI_INT_AUDINT);
274         }
275
276  out:
277         return IRQ_RETVAL(handled);
278 }
279
280
281 static int dsp_buffer_free(snd_cx88_card_t *chip)
282 {
283         BUG_ON(!chip->dma_size);
284
285         dprintk(2,"Freeing buffer\n");
286         videobuf_sg_dma_unmap(&chip->pci->dev, chip->dma_risc);
287         videobuf_dma_free(chip->dma_risc);
288         btcx_riscmem_free(chip->pci,&chip->buf->risc);
289         kfree(chip->buf);
290
291         chip->dma_risc = NULL;
292         chip->dma_size = 0;
293
294         return 0;
295 }
296
297 /****************************************************************************
298                                 ALSA PCM Interface
299  ****************************************************************************/
300
301 /*
302  * Digital hardware definition
303  */
304 #define DEFAULT_FIFO_SIZE       4096
305 static struct snd_pcm_hardware snd_cx88_digital_hw = {
306         .info = SNDRV_PCM_INFO_MMAP |
307                 SNDRV_PCM_INFO_INTERLEAVED |
308                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
309                 SNDRV_PCM_INFO_MMAP_VALID,
310         .formats = SNDRV_PCM_FMTBIT_S16_LE,
311
312         .rates =                SNDRV_PCM_RATE_48000,
313         .rate_min =             48000,
314         .rate_max =             48000,
315         .channels_min = 2,
316         .channels_max = 2,
317         /* Analog audio output will be full of clicks and pops if there
318            are not exactly four lines in the SRAM FIFO buffer.  */
319         .period_bytes_min = DEFAULT_FIFO_SIZE/4,
320         .period_bytes_max = DEFAULT_FIFO_SIZE/4,
321         .periods_min = 1,
322         .periods_max = 1024,
323         .buffer_bytes_max = (1024*1024),
324 };
325
326 /*
327  * audio pcm capture open callback
328  */
329 static int snd_cx88_pcm_open(struct snd_pcm_substream *substream)
330 {
331         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
332         struct snd_pcm_runtime *runtime = substream->runtime;
333         int err;
334
335         if (!chip) {
336                 printk(KERN_ERR "BUG: cx88 can't find device struct."
337                                 " Can't proceed with open\n");
338                 return -ENODEV;
339         }
340
341         err = snd_pcm_hw_constraint_pow2(runtime, 0, SNDRV_PCM_HW_PARAM_PERIODS);
342         if (err < 0)
343                 goto _error;
344
345         chip->substream = substream;
346
347         runtime->hw = snd_cx88_digital_hw;
348
349         if (cx88_sram_channels[SRAM_CH25].fifo_size != DEFAULT_FIFO_SIZE) {
350                 unsigned int bpl = cx88_sram_channels[SRAM_CH25].fifo_size / 4;
351                 bpl &= ~7; /* must be multiple of 8 */
352                 runtime->hw.period_bytes_min = bpl;
353                 runtime->hw.period_bytes_max = bpl;
354         }
355
356         return 0;
357 _error:
358         dprintk(1,"Error opening PCM!\n");
359         return err;
360 }
361
362 /*
363  * audio close callback
364  */
365 static int snd_cx88_close(struct snd_pcm_substream *substream)
366 {
367         return 0;
368 }
369
370 /*
371  * hw_params callback
372  */
373 static int snd_cx88_hw_params(struct snd_pcm_substream * substream,
374                               struct snd_pcm_hw_params * hw_params)
375 {
376         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
377         struct videobuf_dmabuf *dma;
378
379         struct cx88_buffer *buf;
380         int ret;
381
382         if (substream->runtime->dma_area) {
383                 dsp_buffer_free(chip);
384                 substream->runtime->dma_area = NULL;
385         }
386
387         chip->period_size = params_period_bytes(hw_params);
388         chip->num_periods = params_periods(hw_params);
389         chip->dma_size = chip->period_size * params_periods(hw_params);
390
391         BUG_ON(!chip->dma_size);
392         BUG_ON(chip->num_periods & (chip->num_periods-1));
393
394         buf = videobuf_sg_alloc(sizeof(*buf));
395         if (NULL == buf)
396                 return -ENOMEM;
397
398         buf->vb.memory = V4L2_MEMORY_MMAP;
399         buf->vb.field  = V4L2_FIELD_NONE;
400         buf->vb.width  = chip->period_size;
401         buf->bpl       = chip->period_size;
402         buf->vb.height = chip->num_periods;
403         buf->vb.size   = chip->dma_size;
404
405         dma = videobuf_to_dma(&buf->vb);
406         videobuf_dma_init(dma);
407         ret = videobuf_dma_init_kernel(dma, PCI_DMA_FROMDEVICE,
408                         (PAGE_ALIGN(buf->vb.size) >> PAGE_SHIFT));
409         if (ret < 0)
410                 goto error;
411
412         ret = videobuf_sg_dma_map(&chip->pci->dev, dma);
413         if (ret < 0)
414                 goto error;
415
416         ret = cx88_risc_databuffer(chip->pci, &buf->risc, dma->sglist,
417                                    buf->vb.width, buf->vb.height, 1);
418         if (ret < 0)
419                 goto error;
420
421         /* Loop back to start of program */
422         buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP|RISC_IRQ1|RISC_CNT_INC);
423         buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
424
425         buf->vb.state = VIDEOBUF_PREPARED;
426
427         chip->buf = buf;
428         chip->dma_risc = dma;
429
430         substream->runtime->dma_area = chip->dma_risc->vmalloc;
431         substream->runtime->dma_bytes = chip->dma_size;
432         substream->runtime->dma_addr = 0;
433         return 0;
434
435 error:
436         kfree(buf);
437         return ret;
438 }
439
440 /*
441  * hw free callback
442  */
443 static int snd_cx88_hw_free(struct snd_pcm_substream * substream)
444 {
445
446         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
447
448         if (substream->runtime->dma_area) {
449                 dsp_buffer_free(chip);
450                 substream->runtime->dma_area = NULL;
451         }
452
453         return 0;
454 }
455
456 /*
457  * prepare callback
458  */
459 static int snd_cx88_prepare(struct snd_pcm_substream *substream)
460 {
461         return 0;
462 }
463
464 /*
465  * trigger callback
466  */
467 static int snd_cx88_card_trigger(struct snd_pcm_substream *substream, int cmd)
468 {
469         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
470         int err;
471
472         /* Local interrupts are already disabled by ALSA */
473         spin_lock(&chip->reg_lock);
474
475         switch (cmd) {
476         case SNDRV_PCM_TRIGGER_START:
477                 err=_cx88_start_audio_dma(chip);
478                 break;
479         case SNDRV_PCM_TRIGGER_STOP:
480                 err=_cx88_stop_audio_dma(chip);
481                 break;
482         default:
483                 err=-EINVAL;
484                 break;
485         }
486
487         spin_unlock(&chip->reg_lock);
488
489         return err;
490 }
491
492 /*
493  * pointer callback
494  */
495 static snd_pcm_uframes_t snd_cx88_pointer(struct snd_pcm_substream *substream)
496 {
497         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
498         struct snd_pcm_runtime *runtime = substream->runtime;
499         u16 count;
500
501         count = atomic_read(&chip->count);
502
503 //      dprintk(2, "%s - count %d (+%u), period %d, frame %lu\n", __func__,
504 //              count, new, count & (runtime->periods-1),
505 //              runtime->period_size * (count & (runtime->periods-1)));
506         return runtime->period_size * (count & (runtime->periods-1));
507 }
508
509 /*
510  * page callback (needed for mmap)
511  */
512 static struct page *snd_cx88_page(struct snd_pcm_substream *substream,
513                                 unsigned long offset)
514 {
515         void *pageptr = substream->runtime->dma_area + offset;
516         return vmalloc_to_page(pageptr);
517 }
518
519 /*
520  * operators
521  */
522 static struct snd_pcm_ops snd_cx88_pcm_ops = {
523         .open = snd_cx88_pcm_open,
524         .close = snd_cx88_close,
525         .ioctl = snd_pcm_lib_ioctl,
526         .hw_params = snd_cx88_hw_params,
527         .hw_free = snd_cx88_hw_free,
528         .prepare = snd_cx88_prepare,
529         .trigger = snd_cx88_card_trigger,
530         .pointer = snd_cx88_pointer,
531         .page = snd_cx88_page,
532 };
533
534 /*
535  * create a PCM device
536  */
537 static int __devinit snd_cx88_pcm(snd_cx88_card_t *chip, int device, char *name)
538 {
539         int err;
540         struct snd_pcm *pcm;
541
542         err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm);
543         if (err < 0)
544                 return err;
545         pcm->private_data = chip;
546         strcpy(pcm->name, name);
547         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cx88_pcm_ops);
548
549         return 0;
550 }
551
552 /****************************************************************************
553                                 CONTROL INTERFACE
554  ****************************************************************************/
555 static int snd_cx88_volume_info(struct snd_kcontrol *kcontrol,
556                                 struct snd_ctl_elem_info *info)
557 {
558         info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
559         info->count = 2;
560         info->value.integer.min = 0;
561         info->value.integer.max = 0x3f;
562
563         return 0;
564 }
565
566 static int snd_cx88_volume_get(struct snd_kcontrol *kcontrol,
567                                struct snd_ctl_elem_value *value)
568 {
569         snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
570         struct cx88_core *core=chip->core;
571         int vol = 0x3f - (cx_read(AUD_VOL_CTL) & 0x3f),
572             bal = cx_read(AUD_BAL_CTL);
573
574         value->value.integer.value[(bal & 0x40) ? 0 : 1] = vol;
575         vol -= (bal & 0x3f);
576         value->value.integer.value[(bal & 0x40) ? 1 : 0] = vol < 0 ? 0 : vol;
577
578         return 0;
579 }
580
581 /* OK - TODO: test it */
582 static int snd_cx88_volume_put(struct snd_kcontrol *kcontrol,
583                                struct snd_ctl_elem_value *value)
584 {
585         snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
586         struct cx88_core *core=chip->core;
587         int v, b;
588         int changed = 0;
589         u32 old;
590
591         b = value->value.integer.value[1] - value->value.integer.value[0];
592         if (b < 0) {
593             v = 0x3f - value->value.integer.value[0];
594             b = (-b) | 0x40;
595         } else {
596             v = 0x3f - value->value.integer.value[1];
597         }
598         /* Do we really know this will always be called with IRQs on? */
599         spin_lock_irq(&chip->reg_lock);
600         old = cx_read(AUD_VOL_CTL);
601         if (v != (old & 0x3f)) {
602             cx_write(AUD_VOL_CTL, (old & ~0x3f) | v);
603             changed = 1;
604         }
605         if (cx_read(AUD_BAL_CTL) != b) {
606             cx_write(AUD_BAL_CTL, b);
607             changed = 1;
608         }
609         spin_unlock_irq(&chip->reg_lock);
610
611         return changed;
612 }
613
614 static const DECLARE_TLV_DB_SCALE(snd_cx88_db_scale, -6300, 100, 0);
615
616 static struct snd_kcontrol_new snd_cx88_volume = {
617         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
618         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
619                   SNDRV_CTL_ELEM_ACCESS_TLV_READ,
620         .name = "Playback Volume",
621         .info = snd_cx88_volume_info,
622         .get = snd_cx88_volume_get,
623         .put = snd_cx88_volume_put,
624         .tlv.p = snd_cx88_db_scale,
625 };
626
627 static int snd_cx88_switch_get(struct snd_kcontrol *kcontrol,
628                                struct snd_ctl_elem_value *value)
629 {
630         snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
631         struct cx88_core *core = chip->core;
632         u32 bit = kcontrol->private_value;
633
634         value->value.integer.value[0] = !(cx_read(AUD_VOL_CTL) & bit);
635         return 0;
636 }
637
638 static int snd_cx88_switch_put(struct snd_kcontrol *kcontrol,
639                                        struct snd_ctl_elem_value *value)
640 {
641         snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
642         struct cx88_core *core = chip->core;
643         u32 bit = kcontrol->private_value;
644         int ret = 0;
645         u32 vol;
646
647         spin_lock_irq(&chip->reg_lock);
648         vol = cx_read(AUD_VOL_CTL);
649         if (value->value.integer.value[0] != !(vol & bit)) {
650                 vol ^= bit;
651                 cx_write(AUD_VOL_CTL, vol);
652                 ret = 1;
653         }
654         spin_unlock_irq(&chip->reg_lock);
655         return ret;
656 }
657
658 static struct snd_kcontrol_new snd_cx88_dac_switch = {
659         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
660         .name = "Playback Switch",
661         .info = snd_ctl_boolean_mono_info,
662         .get = snd_cx88_switch_get,
663         .put = snd_cx88_switch_put,
664         .private_value = (1<<8),
665 };
666
667 static struct snd_kcontrol_new snd_cx88_source_switch = {
668         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
669         .name = "Capture Switch",
670         .info = snd_ctl_boolean_mono_info,
671         .get = snd_cx88_switch_get,
672         .put = snd_cx88_switch_put,
673         .private_value = (1<<6),
674 };
675
676 /****************************************************************************
677                         Basic Flow for Sound Devices
678  ****************************************************************************/
679
680 /*
681  * PCI ID Table - 14f1:8801 and 14f1:8811 means function 1: Audio
682  * Only boards with eeprom and byte 1 at eeprom=1 have it
683  */
684
685 static struct pci_device_id cx88_audio_pci_tbl[] __devinitdata = {
686         {0x14f1,0x8801,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
687         {0x14f1,0x8811,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
688         {0, }
689 };
690 MODULE_DEVICE_TABLE(pci, cx88_audio_pci_tbl);
691
692 /*
693  * Chip-specific destructor
694  */
695
696 static int snd_cx88_free(snd_cx88_card_t *chip)
697 {
698
699         if (chip->irq >= 0)
700                 free_irq(chip->irq, chip);
701
702         cx88_core_put(chip->core,chip->pci);
703
704         pci_disable_device(chip->pci);
705         return 0;
706 }
707
708 /*
709  * Component Destructor
710  */
711 static void snd_cx88_dev_free(struct snd_card * card)
712 {
713         snd_cx88_card_t *chip = card->private_data;
714
715         snd_cx88_free(chip);
716 }
717
718
719 /*
720  * Alsa Constructor - Component probe
721  */
722
723 static int devno;
724 static int __devinit snd_cx88_create(struct snd_card *card,
725                                      struct pci_dev *pci,
726                                      snd_cx88_card_t **rchip)
727 {
728         snd_cx88_card_t   *chip;
729         struct cx88_core  *core;
730         int               err;
731         unsigned char     pci_lat;
732
733         *rchip = NULL;
734
735         err = pci_enable_device(pci);
736         if (err < 0)
737                 return err;
738
739         pci_set_master(pci);
740
741         chip = (snd_cx88_card_t *) card->private_data;
742
743         core = cx88_core_get(pci);
744         if (NULL == core) {
745                 err = -EINVAL;
746                 kfree (chip);
747                 return err;
748         }
749
750         if (!pci_dma_supported(pci,DMA_32BIT_MASK)) {
751                 dprintk(0, "%s/1: Oops: no 32bit PCI DMA ???\n",core->name);
752                 err = -EIO;
753                 cx88_core_put(core,pci);
754                 return err;
755         }
756
757
758         /* pci init */
759         chip->card = card;
760         chip->pci = pci;
761         chip->irq = -1;
762         spin_lock_init(&chip->reg_lock);
763
764         chip->core = core;
765
766         /* get irq */
767         err = request_irq(chip->pci->irq, cx8801_irq,
768                           IRQF_SHARED | IRQF_DISABLED, chip->core->name, chip);
769         if (err < 0) {
770                 dprintk(0, "%s: can't get IRQ %d\n",
771                        chip->core->name, chip->pci->irq);
772                 return err;
773         }
774
775         /* print pci info */
776         pci_read_config_byte(pci, PCI_LATENCY_TIMER, &pci_lat);
777
778         dprintk(1,"ALSA %s/%i: found at %s, rev: %d, irq: %d, "
779                "latency: %d, mmio: 0x%llx\n", core->name, devno,
780                pci_name(pci), pci->revision, pci->irq,
781                pci_lat, (unsigned long long)pci_resource_start(pci,0));
782
783         chip->irq = pci->irq;
784         synchronize_irq(chip->irq);
785
786         snd_card_set_dev(card, &pci->dev);
787
788         *rchip = chip;
789
790         return 0;
791 }
792
793 static int __devinit cx88_audio_initdev(struct pci_dev *pci,
794                                     const struct pci_device_id *pci_id)
795 {
796         struct snd_card  *card;
797         snd_cx88_card_t  *chip;
798         int              err;
799
800         if (devno >= SNDRV_CARDS)
801                 return (-ENODEV);
802
803         if (!enable[devno]) {
804                 ++devno;
805                 return (-ENOENT);
806         }
807
808         card = snd_card_new(index[devno], id[devno], THIS_MODULE, sizeof(snd_cx88_card_t));
809         if (!card)
810                 return (-ENOMEM);
811
812         card->private_free = snd_cx88_dev_free;
813
814         err = snd_cx88_create(card, pci, &chip);
815         if (err < 0)
816                 return (err);
817
818         err = snd_cx88_pcm(chip, 0, "CX88 Digital");
819         if (err < 0)
820                 goto error;
821
822         err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_volume, chip));
823         if (err < 0)
824                 goto error;
825         err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_dac_switch, chip));
826         if (err < 0)
827                 goto error;
828         err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_source_switch, chip));
829         if (err < 0)
830                 goto error;
831
832         strcpy (card->driver, "CX88x");
833         sprintf(card->shortname, "Conexant CX%x", pci->device);
834         sprintf(card->longname, "%s at %#llx",
835                 card->shortname,(unsigned long long)pci_resource_start(pci, 0));
836         strcpy (card->mixername, "CX88");
837
838         dprintk (0, "%s/%i: ALSA support for cx2388x boards\n",
839                card->driver,devno);
840
841         err = snd_card_register(card);
842         if (err < 0)
843                 goto error;
844         pci_set_drvdata(pci,card);
845
846         devno++;
847         return 0;
848
849 error:
850         snd_card_free(card);
851         return err;
852 }
853 /*
854  * ALSA destructor
855  */
856 static void __devexit cx88_audio_finidev(struct pci_dev *pci)
857 {
858         struct cx88_audio_dev *card = pci_get_drvdata(pci);
859
860         snd_card_free((void *)card);
861
862         pci_set_drvdata(pci, NULL);
863
864         devno--;
865 }
866
867 /*
868  * PCI driver definition
869  */
870
871 static struct pci_driver cx88_audio_pci_driver = {
872         .name     = "cx88_audio",
873         .id_table = cx88_audio_pci_tbl,
874         .probe    = cx88_audio_initdev,
875         .remove   = cx88_audio_finidev,
876 };
877
878 /****************************************************************************
879                                 LINUX MODULE INIT
880  ****************************************************************************/
881
882 /*
883  * module init
884  */
885 static int cx88_audio_init(void)
886 {
887         printk(KERN_INFO "cx2388x alsa driver version %d.%d.%d loaded\n",
888                (CX88_VERSION_CODE >> 16) & 0xff,
889                (CX88_VERSION_CODE >>  8) & 0xff,
890                CX88_VERSION_CODE & 0xff);
891 #ifdef SNAPSHOT
892         printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
893                SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
894 #endif
895         return pci_register_driver(&cx88_audio_pci_driver);
896 }
897
898 /*
899  * module remove
900  */
901 static void cx88_audio_fini(void)
902 {
903
904         pci_unregister_driver(&cx88_audio_pci_driver);
905 }
906
907 module_init(cx88_audio_init);
908 module_exit(cx88_audio_fini);
909
910 /* ----------------------------------------------------------- */
911 /*
912  * Local variables:
913  * c-basic-offset: 8
914  * End:
915  */