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
_cx88_start_audio_dma(snd_cx88_card_t * chip)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 */
_cx88_stop_audio_dma(snd_cx88_card_t * chip)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 */
cx8801_aud_irq(snd_cx88_card_t * chip)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 */
cx8801_irq(int irq,void * dev_id)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
dsp_buffer_free(snd_cx88_card_t * chip)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 */
snd_cx88_pcm_open(struct snd_pcm_substream * substream)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 */
snd_cx88_close(struct snd_pcm_substream * substream)364 static int snd_cx88_close(struct snd_pcm_substream *substream)
365 {
366 return 0;
367 }
368
369 /*
370 * hw_params callback
371 */
snd_cx88_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * hw_params)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 */
snd_cx88_hw_free(struct snd_pcm_substream * substream)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 */
snd_cx88_prepare(struct snd_pcm_substream * substream)458 static int snd_cx88_prepare(struct snd_pcm_substream *substream)
459 {
460 return 0;
461 }
462
463 /*
464 * trigger callback
465 */
snd_cx88_card_trigger(struct snd_pcm_substream * substream,int cmd)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 */
snd_cx88_pointer(struct snd_pcm_substream * substream)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 */
snd_cx88_page(struct snd_pcm_substream * substream,unsigned long offset)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 */
snd_cx88_pcm(snd_cx88_card_t * chip,int device,char * name)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 ****************************************************************************/
snd_cx88_volume_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * info)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
snd_cx88_volume_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * value)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 */
snd_cx88_volume_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * value)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
snd_cx88_switch_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * value)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
snd_cx88_switch_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * value)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
snd_cx88_free(snd_cx88_card_t * chip)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 */
snd_cx88_dev_free(struct snd_card * card)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;
snd_cx88_create(struct snd_card * card,struct pci_dev * pci,snd_cx88_card_t ** rchip)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_32BIT_MASK)) {
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
cx88_audio_initdev(struct pci_dev * pci,const struct pci_device_id * pci_id)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 card = snd_card_new(index[devno], id[devno], THIS_MODULE, sizeof(snd_cx88_card_t));
807 if (!card)
808 return (-ENOMEM);
809
810 card->private_free = snd_cx88_dev_free;
811
812 err = snd_cx88_create(card, pci, &chip);
813 if (err < 0)
814 goto error;
815
816 err = snd_cx88_pcm(chip, 0, "CX88 Digital");
817 if (err < 0)
818 goto error;
819
820 err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_volume, chip));
821 if (err < 0)
822 goto error;
823 err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_dac_switch, chip));
824 if (err < 0)
825 goto error;
826 err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_source_switch, chip));
827 if (err < 0)
828 goto error;
829
830 strcpy (card->driver, "CX88x");
831 sprintf(card->shortname, "Conexant CX%x", pci->device);
832 sprintf(card->longname, "%s at %#llx",
833 card->shortname,(unsigned long long)pci_resource_start(pci, 0));
834 strcpy (card->mixername, "CX88");
835
836 dprintk (0, "%s/%i: ALSA support for cx2388x boards\n",
837 card->driver,devno);
838
839 err = snd_card_register(card);
840 if (err < 0)
841 goto error;
842 pci_set_drvdata(pci,card);
843
844 devno++;
845 return 0;
846
847 error:
848 snd_card_free(card);
849 return err;
850 }
851 /*
852 * ALSA destructor
853 */
cx88_audio_finidev(struct pci_dev * pci)854 static void __devexit cx88_audio_finidev(struct pci_dev *pci)
855 {
856 struct cx88_audio_dev *card = pci_get_drvdata(pci);
857
858 snd_card_free((void *)card);
859
860 pci_set_drvdata(pci, NULL);
861
862 devno--;
863 }
864
865 /*
866 * PCI driver definition
867 */
868
869 static struct pci_driver cx88_audio_pci_driver = {
870 .name = "cx88_audio",
871 .id_table = cx88_audio_pci_tbl,
872 .probe = cx88_audio_initdev,
873 .remove = cx88_audio_finidev,
874 };
875
876 /****************************************************************************
877 LINUX MODULE INIT
878 ****************************************************************************/
879
880 /*
881 * module init
882 */
cx88_audio_init(void)883 static int cx88_audio_init(void)
884 {
885 printk(KERN_INFO "cx2388x alsa driver version %d.%d.%d loaded\n",
886 (CX88_VERSION_CODE >> 16) & 0xff,
887 (CX88_VERSION_CODE >> 8) & 0xff,
888 CX88_VERSION_CODE & 0xff);
889 #ifdef SNAPSHOT
890 printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
891 SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
892 #endif
893 return pci_register_driver(&cx88_audio_pci_driver);
894 }
895
896 /*
897 * module remove
898 */
cx88_audio_fini(void)899 static void cx88_audio_fini(void)
900 {
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 */
914