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V4L/DVB (6715): ivtv: Remove unnecessary register update
[linux-2.6/verdex.git] / drivers / media / video / saa7134 / saa7134-alsa.c
blobba2531034a91264f763d53daabab533a98469bcb
1 /*
2 * SAA713x ALSA support for V4L
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, version 2
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program; if not, write to the Free Software
15 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
16 *
17 */
18
19 #include <linux/init.h>
20 #include <linux/slab.h>
21 #include <linux/time.h>
22 #include <linux/wait.h>
23 #include <linux/module.h>
24 #include <sound/driver.h>
25 #include <sound/core.h>
26 #include <sound/control.h>
27 #include <sound/pcm.h>
28 #include <sound/pcm_params.h>
29 #include <sound/initval.h>
30 #include <linux/interrupt.h>
31
32 #include "saa7134.h"
33 #include "saa7134-reg.h"
34
35 static unsigned int debug = 0;
36 module_param(debug, int, 0644);
37 MODULE_PARM_DESC(debug,"enable debug messages [alsa]");
38
39 /*
40 * Configuration macros
41 */
42
43 /* defaults */
44 #define MIXER_ADDR_TVTUNER 0
45 #define MIXER_ADDR_LINE1 1
46 #define MIXER_ADDR_LINE2 2
47 #define MIXER_ADDR_LAST 2
48
49
50 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
51 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
52 static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 1};
53
54 module_param_array(index, int, NULL, 0444);
55 module_param_array(enable, int, NULL, 0444);
56 MODULE_PARM_DESC(index, "Index value for SAA7134 capture interface(s).");
57 MODULE_PARM_DESC(enable, "Enable (or not) the SAA7134 capture interface(s).");
58
59 #define dprintk(fmt, arg...) if (debug) \
60 printk(KERN_DEBUG "%s/alsa: " fmt, dev->name , ##arg)
61
62
63
64 /*
65 * Main chip structure
66 */
67
68 typedef struct snd_card_saa7134 {
69 struct snd_card *card;
70 spinlock_t mixer_lock;
71 int mixer_volume[MIXER_ADDR_LAST+1][2];
72 int capture_source[MIXER_ADDR_LAST+1][2];
73 struct pci_dev *pci;
74 struct saa7134_dev *dev;
75
76 unsigned long iobase;
77 s16 irq;
78 u16 mute_was_on;
79
80 spinlock_t lock;
81 } snd_card_saa7134_t;
82
83
84
85 /*
86 * PCM structure
87 */
88
89 typedef struct snd_card_saa7134_pcm {
90 struct saa7134_dev *dev;
91
92 spinlock_t lock;
93
94 struct snd_pcm_substream *substream;
95 } snd_card_saa7134_pcm_t;
96
97 static struct snd_card *snd_saa7134_cards[SNDRV_CARDS];
98
99
100 /*
101 * saa7134 DMA audio stop
102 *
103 * Called when the capture device is released or the buffer overflows
104 *
105 * - Copied verbatim from saa7134-oss's dsp_dma_stop.
106 *
107 */
108
109 static void saa7134_dma_stop(struct saa7134_dev *dev)
110 {
111 dev->dmasound.dma_blk = -1;
112 dev->dmasound.dma_running = 0;
113 saa7134_set_dmabits(dev);
114 }
115
116 /*
117 * saa7134 DMA audio start
118 *
119 * Called when preparing the capture device for use
120 *
121 * - Copied verbatim from saa7134-oss's dsp_dma_start.
122 *
123 */
124
125 static void saa7134_dma_start(struct saa7134_dev *dev)
126 {
127 dev->dmasound.dma_blk = 0;
128 dev->dmasound.dma_running = 1;
129 saa7134_set_dmabits(dev);
130 }
131
132 /*
133 * saa7134 audio DMA IRQ handler
134 *
135 * Called whenever we get an SAA7134_IRQ_REPORT_DONE_RA3 interrupt
136 * Handles shifting between the 2 buffers, manages the read counters,
137 * and notifies ALSA when periods elapse
138 *
139 * - Mostly copied from saa7134-oss's saa7134_irq_oss_done.
140 *
141 */
142
143 static void saa7134_irq_alsa_done(struct saa7134_dev *dev,
144 unsigned long status)
145 {
146 int next_blk, reg = 0;
147
148 spin_lock(&dev->slock);
149 if (UNSET == dev->dmasound.dma_blk) {
150 dprintk("irq: recording stopped\n");
151 goto done;
152 }
153 if (0 != (status & 0x0f000000))
154 dprintk("irq: lost %ld\n", (status >> 24) & 0x0f);
155 if (0 == (status & 0x10000000)) {
156 /* odd */
157 if (0 == (dev->dmasound.dma_blk & 0x01))
158 reg = SAA7134_RS_BA1(6);
159 } else {
160 /* even */
161 if (1 == (dev->dmasound.dma_blk & 0x01))
162 reg = SAA7134_RS_BA2(6);
163 }
164 if (0 == reg) {
165 dprintk("irq: field oops [%s]\n",
166 (status & 0x10000000) ? "even" : "odd");
167 goto done;
168 }
169
170 if (dev->dmasound.read_count >= dev->dmasound.blksize * (dev->dmasound.blocks-2)) {
171 dprintk("irq: overrun [full=%d/%d] - Blocks in %d\n",dev->dmasound.read_count,
172 dev->dmasound.bufsize, dev->dmasound.blocks);
173 spin_unlock(&dev->slock);
174 snd_pcm_stop(dev->dmasound.substream,SNDRV_PCM_STATE_XRUN);
175 return;
176 }
177
178 /* next block addr */
179 next_blk = (dev->dmasound.dma_blk + 2) % dev->dmasound.blocks;
180 saa_writel(reg,next_blk * dev->dmasound.blksize);
181 if (debug > 2)
182 dprintk("irq: ok, %s, next_blk=%d, addr=%x, blocks=%u, size=%u, read=%u\n",
183 (status & 0x10000000) ? "even" : "odd ", next_blk,
184 next_blk * dev->dmasound.blksize, dev->dmasound.blocks, dev->dmasound.blksize, dev->dmasound.read_count);
185
186 /* update status & wake waiting readers */
187 dev->dmasound.dma_blk = (dev->dmasound.dma_blk + 1) % dev->dmasound.blocks;
188 dev->dmasound.read_count += dev->dmasound.blksize;
189
190 dev->dmasound.recording_on = reg;
191
192 if (dev->dmasound.read_count >= snd_pcm_lib_period_bytes(dev->dmasound.substream)) {
193 spin_unlock(&dev->slock);
194 snd_pcm_period_elapsed(dev->dmasound.substream);
195 spin_lock(&dev->slock);
196 }
197
198 done:
199 spin_unlock(&dev->slock);
200
201 }
202
203 /*
204 * IRQ request handler
205 *
206 * Runs along with saa7134's IRQ handler, discards anything that isn't
207 * DMA sound
208 *
209 */
210
211 static irqreturn_t saa7134_alsa_irq(int irq, void *dev_id)
212 {
213 struct saa7134_dmasound *dmasound = dev_id;
214 struct saa7134_dev *dev = dmasound->priv_data;
215
216 unsigned long report, status;
217 int loop, handled = 0;
218
219 for (loop = 0; loop < 10; loop++) {
220 report = saa_readl(SAA7134_IRQ_REPORT);
221 status = saa_readl(SAA7134_IRQ_STATUS);
222
223 if (report & SAA7134_IRQ_REPORT_DONE_RA3) {
224 handled = 1;
225 saa_writel(SAA7134_IRQ_REPORT,
226 SAA7134_IRQ_REPORT_DONE_RA3);
227 saa7134_irq_alsa_done(dev, status);
228 } else {
229 goto out;
230 }
231 }
232
233 if (loop == 10) {
234 dprintk("error! looping IRQ!");
235 }
236
237 out:
238 return IRQ_RETVAL(handled);
239 }
240
241 /*
242 * ALSA capture trigger
243 *
244 * - One of the ALSA capture callbacks.
245 *
246 * Called whenever a capture is started or stopped. Must be defined,
247 * but there's nothing we want to do here
248 *
249 */
250
251 static int snd_card_saa7134_capture_trigger(struct snd_pcm_substream * substream,
252 int cmd)
253 {
254 struct snd_pcm_runtime *runtime = substream->runtime;
255 snd_card_saa7134_pcm_t *pcm = runtime->private_data;
256 struct saa7134_dev *dev=pcm->dev;
257 int err = 0;
258
259 spin_lock(&dev->slock);
260 if (cmd == SNDRV_PCM_TRIGGER_START) {
261 /* start dma */
262 saa7134_dma_start(dev);
263 } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
264 /* stop dma */
265 saa7134_dma_stop(dev);
266 } else {
267 err = -EINVAL;
268 }
269 spin_unlock(&dev->slock);
270
271 return err;
272 }
273
274 /*
275 * DMA buffer initialization
276 *
277 * Uses V4L functions to initialize the DMA. Shouldn't be necessary in
278 * ALSA, but I was unable to use ALSA's own DMA, and had to force the
279 * usage of V4L's
280 *
281 * - Copied verbatim from saa7134-oss.
282 *
283 */
284
285 static int dsp_buffer_init(struct saa7134_dev *dev)
286 {
287 int err;
288
289 BUG_ON(!dev->dmasound.bufsize);
290
291 videobuf_dma_init(&dev->dmasound.dma);
292 err = videobuf_dma_init_kernel(&dev->dmasound.dma, PCI_DMA_FROMDEVICE,
293 (dev->dmasound.bufsize + PAGE_SIZE) >> PAGE_SHIFT);
294 if (0 != err)
295 return err;
296 return 0;
297 }
298
299 /*
300 * DMA buffer release
301 *
302 * Called after closing the device, during snd_card_saa7134_capture_close
303 *
304 */
305
306 static int dsp_buffer_free(struct saa7134_dev *dev)
307 {
308 BUG_ON(!dev->dmasound.blksize);
309
310 videobuf_dma_free(&dev->dmasound.dma);
311
312 dev->dmasound.blocks = 0;
313 dev->dmasound.blksize = 0;
314 dev->dmasound.bufsize = 0;
315
316 return 0;
317 }
318
319
320 /*
321 * ALSA PCM preparation
322 *
323 * - One of the ALSA capture callbacks.
324 *
325 * Called right after the capture device is opened, this function configures
326 * the buffer using the previously defined functions, allocates the memory,
327 * sets up the hardware registers, and then starts the DMA. When this function
328 * returns, the audio should be flowing.
329 *
330 */
331
332 static int snd_card_saa7134_capture_prepare(struct snd_pcm_substream * substream)
333 {
334 struct snd_pcm_runtime *runtime = substream->runtime;
335 int bswap, sign;
336 u32 fmt, control;
337 snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
338 struct saa7134_dev *dev;
339 snd_card_saa7134_pcm_t *pcm = runtime->private_data;
340
341 pcm->dev->dmasound.substream = substream;
342
343 dev = saa7134->dev;
344
345 if (snd_pcm_format_width(runtime->format) == 8)
346 fmt = 0x00;
347 else
348 fmt = 0x01;
349
350 if (snd_pcm_format_signed(runtime->format))
351 sign = 1;
352 else
353 sign = 0;
354
355 if (snd_pcm_format_big_endian(runtime->format))
356 bswap = 1;
357 else
358 bswap = 0;
359
360 switch (dev->pci->device) {
361 case PCI_DEVICE_ID_PHILIPS_SAA7134:
362 if (1 == runtime->channels)
363 fmt |= (1 << 3);
364 if (2 == runtime->channels)
365 fmt |= (3 << 3);
366 if (sign)
367 fmt |= 0x04;
368
369 fmt |= (MIXER_ADDR_TVTUNER == dev->dmasound.input) ? 0xc0 : 0x80;
370 saa_writeb(SAA7134_NUM_SAMPLES0, ((dev->dmasound.blksize - 1) & 0x0000ff));
371 saa_writeb(SAA7134_NUM_SAMPLES1, ((dev->dmasound.blksize - 1) & 0x00ff00) >> 8);
372 saa_writeb(SAA7134_NUM_SAMPLES2, ((dev->dmasound.blksize - 1) & 0xff0000) >> 16);
373 saa_writeb(SAA7134_AUDIO_FORMAT_CTRL, fmt);
374
375 break;
376 case PCI_DEVICE_ID_PHILIPS_SAA7133:
377 case PCI_DEVICE_ID_PHILIPS_SAA7135:
378 if (1 == runtime->channels)
379 fmt |= (1 << 4);
380 if (2 == runtime->channels)
381 fmt |= (2 << 4);
382 if (!sign)
383 fmt |= 0x04;
384 saa_writel(SAA7133_NUM_SAMPLES, dev->dmasound.blksize -1);
385 saa_writel(SAA7133_AUDIO_CHANNEL, 0x543210 | (fmt << 24));
386 break;
387 }
388
389 dprintk("rec_start: afmt=%d ch=%d => fmt=0x%x swap=%c\n",
390 runtime->format, runtime->channels, fmt,
391 bswap ? 'b' : '-');
392 /* dma: setup channel 6 (= AUDIO) */
393 control = SAA7134_RS_CONTROL_BURST_16 |
394 SAA7134_RS_CONTROL_ME |
395 (dev->dmasound.pt.dma >> 12);
396 if (bswap)
397 control |= SAA7134_RS_CONTROL_BSWAP;
398
399 saa_writel(SAA7134_RS_BA1(6),0);
400 saa_writel(SAA7134_RS_BA2(6),dev->dmasound.blksize);
401 saa_writel(SAA7134_RS_PITCH(6),0);
402 saa_writel(SAA7134_RS_CONTROL(6),control);
403
404 dev->dmasound.rate = runtime->rate;
405
406 return 0;
407
408 }
409
410 /*
411 * ALSA pointer fetching
412 *
413 * - One of the ALSA capture callbacks.
414 *
415 * Called whenever a period elapses, it must return the current hardware
416 * position of the buffer.
417 * Also resets the read counter used to prevent overruns
418 *
419 */
420
421 static snd_pcm_uframes_t
422 snd_card_saa7134_capture_pointer(struct snd_pcm_substream * substream)
423 {
424 struct snd_pcm_runtime *runtime = substream->runtime;
425 snd_card_saa7134_pcm_t *pcm = runtime->private_data;
426 struct saa7134_dev *dev=pcm->dev;
427
428 if (dev->dmasound.read_count) {
429 dev->dmasound.read_count -= snd_pcm_lib_period_bytes(substream);
430 dev->dmasound.read_offset += snd_pcm_lib_period_bytes(substream);
431 if (dev->dmasound.read_offset == dev->dmasound.bufsize)
432 dev->dmasound.read_offset = 0;
433 }
434
435 return bytes_to_frames(runtime, dev->dmasound.read_offset);
436 }
437
438 /*
439 * ALSA hardware capabilities definition
440 */
441
442 static struct snd_pcm_hardware snd_card_saa7134_capture =
443 {
444 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
445 SNDRV_PCM_INFO_BLOCK_TRANSFER |
446 SNDRV_PCM_INFO_MMAP_VALID),
447 .formats = SNDRV_PCM_FMTBIT_S16_LE | \
448 SNDRV_PCM_FMTBIT_S16_BE | \
449 SNDRV_PCM_FMTBIT_S8 | \
450 SNDRV_PCM_FMTBIT_U8 | \
451 SNDRV_PCM_FMTBIT_U16_LE | \
452 SNDRV_PCM_FMTBIT_U16_BE,
453 .rates = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_48000,
454 .rate_min = 32000,
455 .rate_max = 48000,
456 .channels_min = 1,
457 .channels_max = 2,
458 .buffer_bytes_max = (256*1024),
459 .period_bytes_min = 64,
460 .period_bytes_max = (256*1024),
461 .periods_min = 4,
462 .periods_max = 1024,
463 };
464
465 static void snd_card_saa7134_runtime_free(struct snd_pcm_runtime *runtime)
466 {
467 snd_card_saa7134_pcm_t *pcm = runtime->private_data;
468
469 kfree(pcm);
470 }
471
472
473 /*
474 * ALSA hardware params
475 *
476 * - One of the ALSA capture callbacks.
477 *
478 * Called on initialization, right before the PCM preparation
479 *
480 */
481
482 static int snd_card_saa7134_hw_params(struct snd_pcm_substream * substream,
483 struct snd_pcm_hw_params * hw_params)
484 {
485 snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
486 struct saa7134_dev *dev;
487 unsigned int period_size, periods;
488 int err;
489
490 period_size = params_period_bytes(hw_params);
491 periods = params_periods(hw_params);
492
493 snd_assert(period_size >= 0x100 && period_size <= 0x10000,
494 return -EINVAL);
495 snd_assert(periods >= 4, return -EINVAL);
496 snd_assert(period_size * periods <= 1024 * 1024, return -EINVAL);
497
498 dev = saa7134->dev;
499
500 if (dev->dmasound.blocks == periods &&
501 dev->dmasound.blksize == period_size)
502 return 0;
503
504 /* release the old buffer */
505 if (substream->runtime->dma_area) {
506 saa7134_pgtable_free(dev->pci, &dev->dmasound.pt);
507 videobuf_pci_dma_unmap(dev->pci, &dev->dmasound.dma);
508 dsp_buffer_free(dev);
509 substream->runtime->dma_area = NULL;
510 }
511 dev->dmasound.blocks = periods;
512 dev->dmasound.blksize = period_size;
513 dev->dmasound.bufsize = period_size * periods;
514
515 err = dsp_buffer_init(dev);
516 if (0 != err) {
517 dev->dmasound.blocks = 0;
518 dev->dmasound.blksize = 0;
519 dev->dmasound.bufsize = 0;
520 return err;
521 }
522
523 if (0 != (err = videobuf_pci_dma_map(dev->pci, &dev->dmasound.dma))) {
524 dsp_buffer_free(dev);
525 return err;
526 }
527 if (0 != (err = saa7134_pgtable_alloc(dev->pci,&dev->dmasound.pt))) {
528 videobuf_pci_dma_unmap(dev->pci, &dev->dmasound.dma);
529 dsp_buffer_free(dev);
530 return err;
531 }
532 if (0 != (err = saa7134_pgtable_build(dev->pci,&dev->dmasound.pt,
533 dev->dmasound.dma.sglist,
534 dev->dmasound.dma.sglen,
535 0))) {
536 saa7134_pgtable_free(dev->pci, &dev->dmasound.pt);
537 videobuf_pci_dma_unmap(dev->pci, &dev->dmasound.dma);
538 dsp_buffer_free(dev);
539 return err;
540 }
541
542 /* I should be able to use runtime->dma_addr in the control
543 byte, but it doesn't work. So I allocate the DMA using the
544 V4L functions, and force ALSA to use that as the DMA area */
545
546 substream->runtime->dma_area = dev->dmasound.dma.vmalloc;
547 substream->runtime->dma_bytes = dev->dmasound.bufsize;
548 substream->runtime->dma_addr = 0;
549
550 return 0;
551
552 }
553
554 /*
555 * ALSA hardware release
556 *
557 * - One of the ALSA capture callbacks.
558 *
559 * Called after closing the device, but before snd_card_saa7134_capture_close
560 * It stops the DMA audio and releases the buffers.
561 *
562 */
563
564 static int snd_card_saa7134_hw_free(struct snd_pcm_substream * substream)
565 {
566 snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
567 struct saa7134_dev *dev;
568
569 dev = saa7134->dev;
570
571 if (substream->runtime->dma_area) {
572 saa7134_pgtable_free(dev->pci, &dev->dmasound.pt);
573 videobuf_pci_dma_unmap(dev->pci, &dev->dmasound.dma);
574 dsp_buffer_free(dev);
575 substream->runtime->dma_area = NULL;
576 }
577
578 return 0;
579 }
580
581 /*
582 * ALSA capture finish
583 *
584 * - One of the ALSA capture callbacks.
585 *
586 * Called after closing the device.
587 *
588 */
589
590 static int snd_card_saa7134_capture_close(struct snd_pcm_substream * substream)
591 {
592 snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
593 struct saa7134_dev *dev = saa7134->dev;
594
595 if (saa7134->mute_was_on) {
596 dev->ctl_mute = 1;
597 saa7134_tvaudio_setmute(dev);
598 }
599 return 0;
600 }
601
602 /*
603 * ALSA capture start
604 *
605 * - One of the ALSA capture callbacks.
606 *
607 * Called when opening the device. It creates and populates the PCM
608 * structure
609 *
610 */
611
612 static int snd_card_saa7134_capture_open(struct snd_pcm_substream * substream)
613 {
614 struct snd_pcm_runtime *runtime = substream->runtime;
615 snd_card_saa7134_pcm_t *pcm;
616 snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
617 struct saa7134_dev *dev = saa7134->dev;
618 int amux, err;
619
620 mutex_lock(&dev->dmasound.lock);
621
622 dev->dmasound.read_count = 0;
623 dev->dmasound.read_offset = 0;
624
625 amux = dev->input->amux;
626 if ((amux < 1) || (amux > 3))
627 amux = 1;
628 dev->dmasound.input = amux - 1;
629
630 mutex_unlock(&dev->dmasound.lock);
631
632 pcm = kzalloc(sizeof(*pcm), GFP_KERNEL);
633 if (pcm == NULL)
634 return -ENOMEM;
635
636 pcm->dev=saa7134->dev;
637
638 spin_lock_init(&pcm->lock);
639
640 pcm->substream = substream;
641 runtime->private_data = pcm;
642 runtime->private_free = snd_card_saa7134_runtime_free;
643 runtime->hw = snd_card_saa7134_capture;
644
645 if (dev->ctl_mute != 0) {
646 saa7134->mute_was_on = 1;
647 dev->ctl_mute = 0;
648 saa7134_tvaudio_setmute(dev);
649 }
650
651 err = snd_pcm_hw_constraint_integer(runtime,
652 SNDRV_PCM_HW_PARAM_PERIODS);
653 if (err < 0)
654 return err;
655
656 err = snd_pcm_hw_constraint_step(runtime, 0,
657 SNDRV_PCM_HW_PARAM_PERIODS, 2);
658 if (err < 0)
659 return err;
660
661 return 0;
662 }
663
664 /*
665 * page callback (needed for mmap)
666 */
667
668 static struct page *snd_card_saa7134_page(struct snd_pcm_substream *substream,
669 unsigned long offset)
670 {
671 void *pageptr = substream->runtime->dma_area + offset;
672 return vmalloc_to_page(pageptr);
673 }
674
675 /*
676 * ALSA capture callbacks definition
677 */
678
679 static struct snd_pcm_ops snd_card_saa7134_capture_ops = {
680 .open = snd_card_saa7134_capture_open,
681 .close = snd_card_saa7134_capture_close,
682 .ioctl = snd_pcm_lib_ioctl,
683 .hw_params = snd_card_saa7134_hw_params,
684 .hw_free = snd_card_saa7134_hw_free,
685 .prepare = snd_card_saa7134_capture_prepare,
686 .trigger = snd_card_saa7134_capture_trigger,
687 .pointer = snd_card_saa7134_capture_pointer,
688 .page = snd_card_saa7134_page,
689 };
690
691 /*
692 * ALSA PCM setup
693 *
694 * Called when initializing the board. Sets up the name and hooks up
695 * the callbacks
696 *
697 */
698
699 static int snd_card_saa7134_pcm(snd_card_saa7134_t *saa7134, int device)
700 {
701 struct snd_pcm *pcm;
702 int err;
703
704 if ((err = snd_pcm_new(saa7134->card, "SAA7134 PCM", device, 0, 1, &pcm)) < 0)
705 return err;
706 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_card_saa7134_capture_ops);
707 pcm->private_data = saa7134;
708 pcm->info_flags = 0;
709 strcpy(pcm->name, "SAA7134 PCM");
710 return 0;
711 }
712
713 #define SAA713x_VOLUME(xname, xindex, addr) \
714 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
715 .info = snd_saa7134_volume_info, \
716 .get = snd_saa7134_volume_get, .put = snd_saa7134_volume_put, \
717 .private_value = addr }
718
719 static int snd_saa7134_volume_info(struct snd_kcontrol * kcontrol,
720 struct snd_ctl_elem_info * uinfo)
721 {
722 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
723 uinfo->count = 2;
724 uinfo->value.integer.min = 0;
725 uinfo->value.integer.max = 20;
726 return 0;
727 }
728
729 static int snd_saa7134_volume_get(struct snd_kcontrol * kcontrol,
730 struct snd_ctl_elem_value * ucontrol)
731 {
732 snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
733 int addr = kcontrol->private_value;
734
735 ucontrol->value.integer.value[0] = chip->mixer_volume[addr][0];
736 ucontrol->value.integer.value[1] = chip->mixer_volume[addr][1];
737 return 0;
738 }
739
740 static int snd_saa7134_volume_put(struct snd_kcontrol * kcontrol,
741 struct snd_ctl_elem_value * ucontrol)
742 {
743 snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
744 struct saa7134_dev *dev = chip->dev;
745
746 int change, addr = kcontrol->private_value;
747 int left, right;
748
749 left = ucontrol->value.integer.value[0];
750 if (left < 0)
751 left = 0;
752 if (left > 20)
753 left = 20;
754 right = ucontrol->value.integer.value[1];
755 if (right < 0)
756 right = 0;
757 if (right > 20)
758 right = 20;
759 spin_lock_irq(&chip->mixer_lock);
760 change = 0;
761 if (chip->mixer_volume[addr][0] != left) {
762 change = 1;
763 right = left;
764 }
765 if (chip->mixer_volume[addr][1] != right) {
766 change = 1;
767 left = right;
768 }
769 if (change) {
770 switch (dev->pci->device) {
771 case PCI_DEVICE_ID_PHILIPS_SAA7134:
772 switch (addr) {
773 case MIXER_ADDR_TVTUNER:
774 left = 20;
775 break;
776 case MIXER_ADDR_LINE1:
777 saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x10,
778 (left > 10) ? 0x00 : 0x10);
779 break;
780 case MIXER_ADDR_LINE2:
781 saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x20,
782 (left > 10) ? 0x00 : 0x20);
783 break;
784 }
785 break;
786 case PCI_DEVICE_ID_PHILIPS_SAA7133:
787 case PCI_DEVICE_ID_PHILIPS_SAA7135:
788 switch (addr) {
789 case MIXER_ADDR_TVTUNER:
790 left = 20;
791 break;
792 case MIXER_ADDR_LINE1:
793 saa_andorb(0x0594, 0x10,
794 (left > 10) ? 0x00 : 0x10);
795 break;
796 case MIXER_ADDR_LINE2:
797 saa_andorb(0x0594, 0x20,
798 (left > 10) ? 0x00 : 0x20);
799 break;
800 }
801 break;
802 }
803 chip->mixer_volume[addr][0] = left;
804 chip->mixer_volume[addr][1] = right;
805 }
806 spin_unlock_irq(&chip->mixer_lock);
807 return change;
808 }
809
810 #define SAA713x_CAPSRC(xname, xindex, addr) \
811 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
812 .info = snd_saa7134_capsrc_info, \
813 .get = snd_saa7134_capsrc_get, .put = snd_saa7134_capsrc_put, \
814 .private_value = addr }
815
816 static int snd_saa7134_capsrc_info(struct snd_kcontrol * kcontrol,
817 struct snd_ctl_elem_info * uinfo)
818 {
819 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
820 uinfo->count = 2;
821 uinfo->value.integer.min = 0;
822 uinfo->value.integer.max = 1;
823 return 0;
824 }
825
826 static int snd_saa7134_capsrc_get(struct snd_kcontrol * kcontrol,
827 struct snd_ctl_elem_value * ucontrol)
828 {
829 snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
830 int addr = kcontrol->private_value;
831
832 spin_lock_irq(&chip->mixer_lock);
833 ucontrol->value.integer.value[0] = chip->capture_source[addr][0];
834 ucontrol->value.integer.value[1] = chip->capture_source[addr][1];
835 spin_unlock_irq(&chip->mixer_lock);
836
837 return 0;
838 }
839
840 static int snd_saa7134_capsrc_put(struct snd_kcontrol * kcontrol,
841 struct snd_ctl_elem_value * ucontrol)
842 {
843 snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
844 int change, addr = kcontrol->private_value;
845 int left, right;
846 u32 anabar, xbarin;
847 int analog_io, rate;
848 struct saa7134_dev *dev;
849
850 dev = chip->dev;
851
852 left = ucontrol->value.integer.value[0] & 1;
853 right = ucontrol->value.integer.value[1] & 1;
854 spin_lock_irq(&chip->mixer_lock);
855
856 change = chip->capture_source[addr][0] != left ||
857 chip->capture_source[addr][1] != right;
858 chip->capture_source[addr][0] = left;
859 chip->capture_source[addr][1] = right;
860 dev->dmasound.input=addr;
861 spin_unlock_irq(&chip->mixer_lock);
862
863
864 if (change) {
865 switch (dev->pci->device) {
866
867 case PCI_DEVICE_ID_PHILIPS_SAA7134:
868 switch (addr) {
869 case MIXER_ADDR_TVTUNER:
870 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0xc0);
871 saa_andorb(SAA7134_SIF_SAMPLE_FREQ, 0x03, 0x00);
872 break;
873 case MIXER_ADDR_LINE1:
874 case MIXER_ADDR_LINE2:
875 analog_io = (MIXER_ADDR_LINE1 == addr) ? 0x00 : 0x08;
876 rate = (32000 == dev->dmasound.rate) ? 0x01 : 0x03;
877 saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x08, analog_io);
878 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0x80);
879 saa_andorb(SAA7134_SIF_SAMPLE_FREQ, 0x03, rate);
880 break;
881 }
882
883 break;
884 case PCI_DEVICE_ID_PHILIPS_SAA7133:
885 case PCI_DEVICE_ID_PHILIPS_SAA7135:
886 xbarin = 0x03; // adc
887 anabar = 0;
888 switch (addr) {
889 case MIXER_ADDR_TVTUNER:
890 xbarin = 0; // Demodulator
891 anabar = 2; // DACs
892 break;
893 case MIXER_ADDR_LINE1:
894 anabar = 0; // aux1, aux1
895 break;
896 case MIXER_ADDR_LINE2:
897 anabar = 9; // aux2, aux2
898 break;
899 }
900
901 /* output xbar always main channel */
902 saa_dsp_writel(dev, SAA7133_DIGITAL_OUTPUT_SEL1, 0xbbbb10);
903
904 if (left || right) { // We've got data, turn the input on
905 saa_dsp_writel(dev, SAA7133_DIGITAL_INPUT_XBAR1, xbarin);
906 saa_writel(SAA7133_ANALOG_IO_SELECT, anabar);
907 } else {
908 saa_dsp_writel(dev, SAA7133_DIGITAL_INPUT_XBAR1, 0);
909 saa_writel(SAA7133_ANALOG_IO_SELECT, 0);
910 }
911 break;
912 }
913 }
914
915 return change;
916 }
917
918 static struct snd_kcontrol_new snd_saa7134_controls[] = {
919 SAA713x_VOLUME("Video Volume", 0, MIXER_ADDR_TVTUNER),
920 SAA713x_CAPSRC("Video Capture Switch", 0, MIXER_ADDR_TVTUNER),
921 SAA713x_VOLUME("Line Volume", 1, MIXER_ADDR_LINE1),
922 SAA713x_CAPSRC("Line Capture Switch", 1, MIXER_ADDR_LINE1),
923 SAA713x_VOLUME("Line Volume", 2, MIXER_ADDR_LINE2),
924 SAA713x_CAPSRC("Line Capture Switch", 2, MIXER_ADDR_LINE2),
925 };
926
927 /*
928 * ALSA mixer setup
929 *
930 * Called when initializing the board. Sets up the name and hooks up
931 * the callbacks
932 *
933 */
934
935 static int snd_card_saa7134_new_mixer(snd_card_saa7134_t * chip)
936 {
937 struct snd_card *card = chip->card;
938 unsigned int idx;
939 int err;
940
941 snd_assert(chip != NULL, return -EINVAL);
942 strcpy(card->mixername, "SAA7134 Mixer");
943
944 for (idx = 0; idx < ARRAY_SIZE(snd_saa7134_controls); idx++) {
945 if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_saa7134_controls[idx], chip))) < 0)
946 return err;
947 }
948 return 0;
949 }
950
951 static void snd_saa7134_free(struct snd_card * card)
952 {
953 snd_card_saa7134_t *chip = card->private_data;
954
955 if (chip->dev->dmasound.priv_data == NULL)
956 return;
957
958 if (chip->irq >= 0) {
959 synchronize_irq(chip->irq);
960 free_irq(chip->irq, &chip->dev->dmasound);
961 }
962
963 chip->dev->dmasound.priv_data = NULL;
964
965 }
966
967 /*
968 * ALSA initialization
969 *
970 * Called by the init routine, once for each saa7134 device present,
971 * it creates the basic structures and registers the ALSA devices
972 *
973 */
974
975 static int alsa_card_saa7134_create(struct saa7134_dev *dev, int devnum)
976 {
977
978 struct snd_card *card;
979 snd_card_saa7134_t *chip;
980 int err;
981
982
983 if (devnum >= SNDRV_CARDS)
984 return -ENODEV;
985 if (!enable[devnum])
986 return -ENODEV;
987
988 card = snd_card_new(index[devnum], id[devnum], THIS_MODULE, sizeof(snd_card_saa7134_t));
989
990 if (card == NULL)
991 return -ENOMEM;
992
993 strcpy(card->driver, "SAA7134");
994
995 /* Card "creation" */
996
997 card->private_free = snd_saa7134_free;
998 chip = (snd_card_saa7134_t *) card->private_data;
999
1000 spin_lock_init(&chip->lock);
1001 spin_lock_init(&chip->mixer_lock);
1002
1003 chip->dev = dev;
1004
1005 chip->card = card;
1006
1007 chip->pci = dev->pci;
1008 chip->iobase = pci_resource_start(dev->pci, 0);
1009
1010
1011 err = request_irq(dev->pci->irq, saa7134_alsa_irq,
1012 IRQF_SHARED | IRQF_DISABLED, dev->name,
1013 (void*) &dev->dmasound);
1014
1015 if (err < 0) {
1016 printk(KERN_ERR "%s: can't get IRQ %d for ALSA\n",
1017 dev->name, dev->pci->irq);
1018 goto __nodev;
1019 }
1020
1021 chip->irq = dev->pci->irq;
1022
1023 mutex_init(&dev->dmasound.lock);
1024
1025 if ((err = snd_card_saa7134_new_mixer(chip)) < 0)
1026 goto __nodev;
1027
1028 if ((err = snd_card_saa7134_pcm(chip, 0)) < 0)
1029 goto __nodev;
1030
1031 snd_card_set_dev(card, &chip->pci->dev);
1032
1033 /* End of "creation" */
1034
1035 strcpy(card->shortname, "SAA7134");
1036 sprintf(card->longname, "%s at 0x%lx irq %d",
1037 chip->dev->name, chip->iobase, chip->irq);
1038
1039 printk(KERN_INFO "%s/alsa: %s registered as card %d\n",dev->name,card->longname,index[devnum]);
1040
1041 if ((err = snd_card_register(card)) == 0) {
1042 snd_saa7134_cards[devnum] = card;
1043 return 0;
1044 }
1045
1046 __nodev:
1047 snd_card_free(card);
1048 return err;
1049 }
1050
1051
1052 static int alsa_device_init(struct saa7134_dev *dev)
1053 {
1054 dev->dmasound.priv_data = dev;
1055 alsa_card_saa7134_create(dev,dev->nr);
1056 return 1;
1057 }
1058
1059 static int alsa_device_exit(struct saa7134_dev *dev)
1060 {
1061
1062 snd_card_free(snd_saa7134_cards[dev->nr]);
1063 snd_saa7134_cards[dev->nr] = NULL;
1064 return 1;
1065 }
1066
1067 /*
1068 * Module initializer
1069 *
1070 * Loops through present saa7134 cards, and assigns an ALSA device
1071 * to each one
1072 *
1073 */
1074
1075 static int saa7134_alsa_init(void)
1076 {
1077 struct saa7134_dev *dev = NULL;
1078 struct list_head *list;
1079
1080 saa7134_dmasound_init = alsa_device_init;
1081 saa7134_dmasound_exit = alsa_device_exit;
1082
1083 printk(KERN_INFO "saa7134 ALSA driver for DMA sound loaded\n");
1084
1085 list_for_each(list,&saa7134_devlist) {
1086 dev = list_entry(list, struct saa7134_dev, devlist);
1087 alsa_device_init(dev);
1088 }
1089
1090 if (dev == NULL)
1091 printk(KERN_INFO "saa7134 ALSA: no saa7134 cards found\n");
1092
1093 return 0;
1094
1095 }
1096
1097 /*
1098 * Module destructor
1099 */
1100
1101 static void saa7134_alsa_exit(void)
1102 {
1103 int idx;
1104
1105 for (idx = 0; idx < SNDRV_CARDS; idx++) {
1106 snd_card_free(snd_saa7134_cards[idx]);
1107 }
1108
1109 saa7134_dmasound_init = NULL;
1110 saa7134_dmasound_exit = NULL;
1111 printk(KERN_INFO "saa7134 ALSA driver for DMA sound unloaded\n");
1112
1113 return;
1114 }
1115
1116 /* We initialize this late, to make sure the sound system is up and running */
1117 late_initcall(saa7134_alsa_init);
1118 module_exit(saa7134_alsa_exit);
1119 MODULE_LICENSE("GPL");
1120 MODULE_AUTHOR("Ricardo Cerqueira");
1121
1122
1123
Verdex Pro support