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Initial commit
[wrt350n-kernel.git] / drivers / media / video / saa7134 / saa7134-alsa.c
blob047add8f3010efae75fd7128e2d293b75206e1e4
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/core.h>
25 #include <sound/control.h>
26 #include <sound/pcm.h>
27 #include <sound/pcm_params.h>
28 #include <sound/initval.h>
29 #include <linux/interrupt.h>
30
31 #include "saa7134.h"
32 #include "saa7134-reg.h"
33
34 static unsigned int debug = 0;
35 module_param(debug, int, 0644);
36 MODULE_PARM_DESC(debug,"enable debug messages [alsa]");
37
38 /*
39 * Configuration macros
40 */
41
42 /* defaults */
43 #define MIXER_ADDR_TVTUNER 0
44 #define MIXER_ADDR_LINE1 1
45 #define MIXER_ADDR_LINE2 2
46 #define MIXER_ADDR_LAST 2
47
48
49 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
50 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
51 static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 1};
52
53 module_param_array(index, int, NULL, 0444);
54 module_param_array(enable, int, NULL, 0444);
55 MODULE_PARM_DESC(index, "Index value for SAA7134 capture interface(s).");
56 MODULE_PARM_DESC(enable, "Enable (or not) the SAA7134 capture interface(s).");
57
58 #define dprintk(fmt, arg...) if (debug) \
59 printk(KERN_DEBUG "%s/alsa: " fmt, dev->name , ##arg)
60
61
62
63 /*
64 * Main chip structure
65 */
66
67 typedef struct snd_card_saa7134 {
68 struct snd_card *card;
69 spinlock_t mixer_lock;
70 int mixer_volume[MIXER_ADDR_LAST+1][2];
71 int capture_source[MIXER_ADDR_LAST+1][2];
72 struct pci_dev *pci;
73 struct saa7134_dev *dev;
74
75 unsigned long iobase;
76 s16 irq;
77 u16 mute_was_on;
78
79 spinlock_t lock;
80 } snd_card_saa7134_t;
81
82
83
84 /*
85 * PCM structure
86 */
87
88 typedef struct snd_card_saa7134_pcm {
89 struct saa7134_dev *dev;
90
91 spinlock_t lock;
92
93 struct snd_pcm_substream *substream;
94 } snd_card_saa7134_pcm_t;
95
96 static struct snd_card *snd_saa7134_cards[SNDRV_CARDS];
97
98
99 /*
100 * saa7134 DMA audio stop
101 *
102 * Called when the capture device is released or the buffer overflows
103 *
104 * - Copied verbatim from saa7134-oss's dsp_dma_stop.
105 *
106 */
107
108 static void saa7134_dma_stop(struct saa7134_dev *dev)
109 {
110 dev->dmasound.dma_blk = -1;
111 dev->dmasound.dma_running = 0;
112 saa7134_set_dmabits(dev);
113 }
114
115 /*
116 * saa7134 DMA audio start
117 *
118 * Called when preparing the capture device for use
119 *
120 * - Copied verbatim from saa7134-oss's dsp_dma_start.
121 *
122 */
123
124 static void saa7134_dma_start(struct saa7134_dev *dev)
125 {
126 dev->dmasound.dma_blk = 0;
127 dev->dmasound.dma_running = 1;
128 saa7134_set_dmabits(dev);
129 }
130
131 /*
132 * saa7134 audio DMA IRQ handler
133 *
134 * Called whenever we get an SAA7134_IRQ_REPORT_DONE_RA3 interrupt
135 * Handles shifting between the 2 buffers, manages the read counters,
136 * and notifies ALSA when periods elapse
137 *
138 * - Mostly copied from saa7134-oss's saa7134_irq_oss_done.
139 *
140 */
141
142 static void saa7134_irq_alsa_done(struct saa7134_dev *dev,
143 unsigned long status)
144 {
145 int next_blk, reg = 0;
146
147 spin_lock(&dev->slock);
148 if (UNSET == dev->dmasound.dma_blk) {
149 dprintk("irq: recording stopped\n");
150 goto done;
151 }
152 if (0 != (status & 0x0f000000))
153 dprintk("irq: lost %ld\n", (status >> 24) & 0x0f);
154 if (0 == (status & 0x10000000)) {
155 /* odd */
156 if (0 == (dev->dmasound.dma_blk & 0x01))
157 reg = SAA7134_RS_BA1(6);
158 } else {
159 /* even */
160 if (1 == (dev->dmasound.dma_blk & 0x01))
161 reg = SAA7134_RS_BA2(6);
162 }
163 if (0 == reg) {
164 dprintk("irq: field oops [%s]\n",
165 (status & 0x10000000) ? "even" : "odd");
166 goto done;
167 }
168
169 if (dev->dmasound.read_count >= dev->dmasound.blksize * (dev->dmasound.blocks-2)) {
170 dprintk("irq: overrun [full=%d/%d] - Blocks in %d\n",dev->dmasound.read_count,
171 dev->dmasound.bufsize, dev->dmasound.blocks);
172 spin_unlock(&dev->slock);
173 snd_pcm_stop(dev->dmasound.substream,SNDRV_PCM_STATE_XRUN);
174 return;
175 }
176
177 /* next block addr */
178 next_blk = (dev->dmasound.dma_blk + 2) % dev->dmasound.blocks;
179 saa_writel(reg,next_blk * dev->dmasound.blksize);
180 if (debug > 2)
181 dprintk("irq: ok, %s, next_blk=%d, addr=%x, blocks=%u, size=%u, read=%u\n",
182 (status & 0x10000000) ? "even" : "odd ", next_blk,
183 next_blk * dev->dmasound.blksize, dev->dmasound.blocks, dev->dmasound.blksize, dev->dmasound.read_count);
184
185 /* update status & wake waiting readers */
186 dev->dmasound.dma_blk = (dev->dmasound.dma_blk + 1) % dev->dmasound.blocks;
187 dev->dmasound.read_count += dev->dmasound.blksize;
188
189 dev->dmasound.recording_on = reg;
190
191 if (dev->dmasound.read_count >= snd_pcm_lib_period_bytes(dev->dmasound.substream)) {
192 spin_unlock(&dev->slock);
193 snd_pcm_period_elapsed(dev->dmasound.substream);
194 spin_lock(&dev->slock);
195 }
196
197 done:
198 spin_unlock(&dev->slock);
199
200 }
201
202 /*
203 * IRQ request handler
204 *
205 * Runs along with saa7134's IRQ handler, discards anything that isn't
206 * DMA sound
207 *
208 */
209
210 static irqreturn_t saa7134_alsa_irq(int irq, void *dev_id)
211 {
212 struct saa7134_dmasound *dmasound = dev_id;
213 struct saa7134_dev *dev = dmasound->priv_data;
214
215 unsigned long report, status;
216 int loop, handled = 0;
217
218 for (loop = 0; loop < 10; loop++) {
219 report = saa_readl(SAA7134_IRQ_REPORT);
220 status = saa_readl(SAA7134_IRQ_STATUS);
221
222 if (report & SAA7134_IRQ_REPORT_DONE_RA3) {
223 handled = 1;
224 saa_writel(SAA7134_IRQ_REPORT,
225 SAA7134_IRQ_REPORT_DONE_RA3);
226 saa7134_irq_alsa_done(dev, status);
227 } else {
228 goto out;
229 }
230 }
231
232 if (loop == 10) {
233 dprintk("error! looping IRQ!");
234 }
235
236 out:
237 return IRQ_RETVAL(handled);
238 }
239
240 /*
241 * ALSA capture trigger
242 *
243 * - One of the ALSA capture callbacks.
244 *
245 * Called whenever a capture is started or stopped. Must be defined,
246 * but there's nothing we want to do here
247 *
248 */
249
250 static int snd_card_saa7134_capture_trigger(struct snd_pcm_substream * substream,
251 int cmd)
252 {
253 struct snd_pcm_runtime *runtime = substream->runtime;
254 snd_card_saa7134_pcm_t *pcm = runtime->private_data;
255 struct saa7134_dev *dev=pcm->dev;
256 int err = 0;
257
258 spin_lock(&dev->slock);
259 if (cmd == SNDRV_PCM_TRIGGER_START) {
260 /* start dma */
261 saa7134_dma_start(dev);
262 } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
263 /* stop dma */
264 saa7134_dma_stop(dev);
265 } else {
266 err = -EINVAL;
267 }
268 spin_unlock(&dev->slock);
269
270 return err;
271 }
272
273 /*
274 * DMA buffer initialization
275 *
276 * Uses V4L functions to initialize the DMA. Shouldn't be necessary in
277 * ALSA, but I was unable to use ALSA's own DMA, and had to force the
278 * usage of V4L's
279 *
280 * - Copied verbatim from saa7134-oss.
281 *
282 */
283
284 static int dsp_buffer_init(struct saa7134_dev *dev)
285 {
286 int err;
287
288 BUG_ON(!dev->dmasound.bufsize);
289
290 videobuf_dma_init(&dev->dmasound.dma);
291 err = videobuf_dma_init_kernel(&dev->dmasound.dma, PCI_DMA_FROMDEVICE,
292 (dev->dmasound.bufsize + PAGE_SIZE) >> PAGE_SHIFT);
293 if (0 != err)
294 return err;
295 return 0;
296 }
297
298 /*
299 * DMA buffer release
300 *
301 * Called after closing the device, during snd_card_saa7134_capture_close
302 *
303 */
304
305 static int dsp_buffer_free(struct saa7134_dev *dev)
306 {
307 BUG_ON(!dev->dmasound.blksize);
308
309 videobuf_dma_free(&dev->dmasound.dma);
310
311 dev->dmasound.blocks = 0;
312 dev->dmasound.blksize = 0;
313 dev->dmasound.bufsize = 0;
314
315 return 0;
316 }
317
318
319 /*
320 * ALSA PCM preparation
321 *
322 * - One of the ALSA capture callbacks.
323 *
324 * Called right after the capture device is opened, this function configures
325 * the buffer using the previously defined functions, allocates the memory,
326 * sets up the hardware registers, and then starts the DMA. When this function
327 * returns, the audio should be flowing.
328 *
329 */
330
331 static int snd_card_saa7134_capture_prepare(struct snd_pcm_substream * substream)
332 {
333 struct snd_pcm_runtime *runtime = substream->runtime;
334 int bswap, sign;
335 u32 fmt, control;
336 snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
337 struct saa7134_dev *dev;
338 snd_card_saa7134_pcm_t *pcm = runtime->private_data;
339
340 pcm->dev->dmasound.substream = substream;
341
342 dev = saa7134->dev;
343
344 if (snd_pcm_format_width(runtime->format) == 8)
345 fmt = 0x00;
346 else
347 fmt = 0x01;
348
349 if (snd_pcm_format_signed(runtime->format))
350 sign = 1;
351 else
352 sign = 0;
353
354 if (snd_pcm_format_big_endian(runtime->format))
355 bswap = 1;
356 else
357 bswap = 0;
358
359 switch (dev->pci->device) {
360 case PCI_DEVICE_ID_PHILIPS_SAA7134:
361 if (1 == runtime->channels)
362 fmt |= (1 << 3);
363 if (2 == runtime->channels)
364 fmt |= (3 << 3);
365 if (sign)
366 fmt |= 0x04;
367
368 fmt |= (MIXER_ADDR_TVTUNER == dev->dmasound.input) ? 0xc0 : 0x80;
369 saa_writeb(SAA7134_NUM_SAMPLES0, ((dev->dmasound.blksize - 1) & 0x0000ff));
370 saa_writeb(SAA7134_NUM_SAMPLES1, ((dev->dmasound.blksize - 1) & 0x00ff00) >> 8);
371 saa_writeb(SAA7134_NUM_SAMPLES2, ((dev->dmasound.blksize - 1) & 0xff0000) >> 16);
372 saa_writeb(SAA7134_AUDIO_FORMAT_CTRL, fmt);
373
374 break;
375 case PCI_DEVICE_ID_PHILIPS_SAA7133:
376 case PCI_DEVICE_ID_PHILIPS_SAA7135:
377 if (1 == runtime->channels)
378 fmt |= (1 << 4);
379 if (2 == runtime->channels)
380 fmt |= (2 << 4);
381 if (!sign)
382 fmt |= 0x04;
383 saa_writel(SAA7133_NUM_SAMPLES, dev->dmasound.blksize -1);
384 saa_writel(SAA7133_AUDIO_CHANNEL, 0x543210 | (fmt << 24));
385 break;
386 }
387
388 dprintk("rec_start: afmt=%d ch=%d => fmt=0x%x swap=%c\n",
389 runtime->format, runtime->channels, fmt,
390 bswap ? 'b' : '-');
391 /* dma: setup channel 6 (= AUDIO) */
392 control = SAA7134_RS_CONTROL_BURST_16 |
393 SAA7134_RS_CONTROL_ME |
394 (dev->dmasound.pt.dma >> 12);
395 if (bswap)
396 control |= SAA7134_RS_CONTROL_BSWAP;
397
398 saa_writel(SAA7134_RS_BA1(6),0);
399 saa_writel(SAA7134_RS_BA2(6),dev->dmasound.blksize);
400 saa_writel(SAA7134_RS_PITCH(6),0);
401 saa_writel(SAA7134_RS_CONTROL(6),control);
402
403 dev->dmasound.rate = runtime->rate;
404
405 return 0;
406
407 }
408
409 /*
410 * ALSA pointer fetching
411 *
412 * - One of the ALSA capture callbacks.
413 *
414 * Called whenever a period elapses, it must return the current hardware
415 * position of the buffer.
416 * Also resets the read counter used to prevent overruns
417 *
418 */
419
420 static snd_pcm_uframes_t
421 snd_card_saa7134_capture_pointer(struct snd_pcm_substream * substream)
422 {
423 struct snd_pcm_runtime *runtime = substream->runtime;
424 snd_card_saa7134_pcm_t *pcm = runtime->private_data;
425 struct saa7134_dev *dev=pcm->dev;
426
427 if (dev->dmasound.read_count) {
428 dev->dmasound.read_count -= snd_pcm_lib_period_bytes(substream);
429 dev->dmasound.read_offset += snd_pcm_lib_period_bytes(substream);
430 if (dev->dmasound.read_offset == dev->dmasound.bufsize)
431 dev->dmasound.read_offset = 0;
432 }
433
434 return bytes_to_frames(runtime, dev->dmasound.read_offset);
435 }
436
437 /*
438 * ALSA hardware capabilities definition
439 */
440
441 static struct snd_pcm_hardware snd_card_saa7134_capture =
442 {
443 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
444 SNDRV_PCM_INFO_BLOCK_TRANSFER |
445 SNDRV_PCM_INFO_MMAP_VALID),
446 .formats = SNDRV_PCM_FMTBIT_S16_LE | \
447 SNDRV_PCM_FMTBIT_S16_BE | \
448 SNDRV_PCM_FMTBIT_S8 | \
449 SNDRV_PCM_FMTBIT_U8 | \
450 SNDRV_PCM_FMTBIT_U16_LE | \
451 SNDRV_PCM_FMTBIT_U16_BE,
452 .rates = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_48000,
453 .rate_min = 32000,
454 .rate_max = 48000,
455 .channels_min = 1,
456 .channels_max = 2,
457 .buffer_bytes_max = (256*1024),
458 .period_bytes_min = 64,
459 .period_bytes_max = (256*1024),
460 .periods_min = 4,
461 .periods_max = 1024,
462 };
463
464 static void snd_card_saa7134_runtime_free(struct snd_pcm_runtime *runtime)
465 {
466 snd_card_saa7134_pcm_t *pcm = runtime->private_data;
467
468 kfree(pcm);
469 }
470
471
472 /*
473 * ALSA hardware params
474 *
475 * - One of the ALSA capture callbacks.
476 *
477 * Called on initialization, right before the PCM preparation
478 *
479 */
480
481 static int snd_card_saa7134_hw_params(struct snd_pcm_substream * substream,
482 struct snd_pcm_hw_params * hw_params)
483 {
484 snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
485 struct saa7134_dev *dev;
486 unsigned int period_size, periods;
487 int err;
488
489 period_size = params_period_bytes(hw_params);
490 periods = params_periods(hw_params);
491
492 snd_assert(period_size >= 0x100 && period_size <= 0x10000,
493 return -EINVAL);
494 snd_assert(periods >= 4, return -EINVAL);
495 snd_assert(period_size * periods <= 1024 * 1024, return -EINVAL);
496
497 dev = saa7134->dev;
498
499 if (dev->dmasound.blocks == periods &&
500 dev->dmasound.blksize == period_size)
501 return 0;
502
503 /* release the old buffer */
504 if (substream->runtime->dma_area) {
505 saa7134_pgtable_free(dev->pci, &dev->dmasound.pt);
506 videobuf_pci_dma_unmap(dev->pci, &dev->dmasound.dma);
507 dsp_buffer_free(dev);
508 substream->runtime->dma_area = NULL;
509 }
510 dev->dmasound.blocks = periods;
511 dev->dmasound.blksize = period_size;
512 dev->dmasound.bufsize = period_size * periods;
513
514 err = dsp_buffer_init(dev);
515 if (0 != err) {
516 dev->dmasound.blocks = 0;
517 dev->dmasound.blksize = 0;
518 dev->dmasound.bufsize = 0;
519 return err;
520 }
521
522 if (0 != (err = videobuf_pci_dma_map(dev->pci, &dev->dmasound.dma))) {
523 dsp_buffer_free(dev);
524 return err;
525 }
526 if (0 != (err = saa7134_pgtable_alloc(dev->pci,&dev->dmasound.pt))) {
527 videobuf_pci_dma_unmap(dev->pci, &dev->dmasound.dma);
528 dsp_buffer_free(dev);
529 return err;
530 }
531 if (0 != (err = saa7134_pgtable_build(dev->pci,&dev->dmasound.pt,
532 dev->dmasound.dma.sglist,
533 dev->dmasound.dma.sglen,
534 0))) {
535 saa7134_pgtable_free(dev->pci, &dev->dmasound.pt);
536 videobuf_pci_dma_unmap(dev->pci, &dev->dmasound.dma);
537 dsp_buffer_free(dev);
538 return err;
539 }
540
541 /* I should be able to use runtime->dma_addr in the control
542 byte, but it doesn't work. So I allocate the DMA using the
543 V4L functions, and force ALSA to use that as the DMA area */
544
545 substream->runtime->dma_area = dev->dmasound.dma.vmalloc;
546 substream->runtime->dma_bytes = dev->dmasound.bufsize;
547 substream->runtime->dma_addr = 0;
548
549 return 0;
550
551 }
552
553 /*
554 * ALSA hardware release
555 *
556 * - One of the ALSA capture callbacks.
557 *
558 * Called after closing the device, but before snd_card_saa7134_capture_close
559 * It stops the DMA audio and releases the buffers.
560 *
561 */
562
563 static int snd_card_saa7134_hw_free(struct snd_pcm_substream * substream)
564 {
565 snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
566 struct saa7134_dev *dev;
567
568 dev = saa7134->dev;
569
570 if (substream->runtime->dma_area) {
571 saa7134_pgtable_free(dev->pci, &dev->dmasound.pt);
572 videobuf_pci_dma_unmap(dev->pci, &dev->dmasound.dma);
573 dsp_buffer_free(dev);
574 substream->runtime->dma_area = NULL;
575 }
576
577 return 0;
578 }
579
580 /*
581 * ALSA capture finish
582 *
583 * - One of the ALSA capture callbacks.
584 *
585 * Called after closing the device.
586 *
587 */
588
589 static int snd_card_saa7134_capture_close(struct snd_pcm_substream * substream)
590 {
591 snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
592 struct saa7134_dev *dev = saa7134->dev;
593
594 if (saa7134->mute_was_on) {
595 dev->ctl_mute = 1;
596 saa7134_tvaudio_setmute(dev);
597 }
598 return 0;
599 }
600
601 /*
602 * ALSA capture start
603 *
604 * - One of the ALSA capture callbacks.
605 *
606 * Called when opening the device. It creates and populates the PCM
607 * structure
608 *
609 */
610
611 static int snd_card_saa7134_capture_open(struct snd_pcm_substream * substream)
612 {
613 struct snd_pcm_runtime *runtime = substream->runtime;
614 snd_card_saa7134_pcm_t *pcm;
615 snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
616 struct saa7134_dev *dev = saa7134->dev;
617 int amux, err;
618
619 mutex_lock(&dev->dmasound.lock);
620
621 dev->dmasound.read_count = 0;
622 dev->dmasound.read_offset = 0;
623
624 amux = dev->input->amux;
625 if ((amux < 1) || (amux > 3))
626 amux = 1;
627 dev->dmasound.input = amux - 1;
628
629 mutex_unlock(&dev->dmasound.lock);
630
631 pcm = kzalloc(sizeof(*pcm), GFP_KERNEL);
632 if (pcm == NULL)
633 return -ENOMEM;
634
635 pcm->dev=saa7134->dev;
636
637 spin_lock_init(&pcm->lock);
638
639 pcm->substream = substream;
640 runtime->private_data = pcm;
641 runtime->private_free = snd_card_saa7134_runtime_free;
642 runtime->hw = snd_card_saa7134_capture;
643
644 if (dev->ctl_mute != 0) {
645 saa7134->mute_was_on = 1;
646 dev->ctl_mute = 0;
647 saa7134_tvaudio_setmute(dev);
648 }
649
650 err = snd_pcm_hw_constraint_integer(runtime,
651 SNDRV_PCM_HW_PARAM_PERIODS);
652 if (err < 0)
653 return err;
654
655 err = snd_pcm_hw_constraint_step(runtime, 0,
656 SNDRV_PCM_HW_PARAM_PERIODS, 2);
657 if (err < 0)
658 return err;
659
660 return 0;
661 }
662
663 /*
664 * page callback (needed for mmap)
665 */
666
667 static struct page *snd_card_saa7134_page(struct snd_pcm_substream *substream,
668 unsigned long offset)
669 {
670 void *pageptr = substream->runtime->dma_area + offset;
671 return vmalloc_to_page(pageptr);
672 }
673
674 /*
675 * ALSA capture callbacks definition
676 */
677
678 static struct snd_pcm_ops snd_card_saa7134_capture_ops = {
679 .open = snd_card_saa7134_capture_open,
680 .close = snd_card_saa7134_capture_close,
681 .ioctl = snd_pcm_lib_ioctl,
682 .hw_params = snd_card_saa7134_hw_params,
683 .hw_free = snd_card_saa7134_hw_free,
684 .prepare = snd_card_saa7134_capture_prepare,
685 .trigger = snd_card_saa7134_capture_trigger,
686 .pointer = snd_card_saa7134_capture_pointer,
687 .page = snd_card_saa7134_page,
688 };
689
690 /*
691 * ALSA PCM setup
692 *
693 * Called when initializing the board. Sets up the name and hooks up
694 * the callbacks
695 *
696 */
697
698 static int snd_card_saa7134_pcm(snd_card_saa7134_t *saa7134, int device)
699 {
700 struct snd_pcm *pcm;
701 int err;
702
703 if ((err = snd_pcm_new(saa7134->card, "SAA7134 PCM", device, 0, 1, &pcm)) < 0)
704 return err;
705 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_card_saa7134_capture_ops);
706 pcm->private_data = saa7134;
707 pcm->info_flags = 0;
708 strcpy(pcm->name, "SAA7134 PCM");
709 return 0;
710 }
711
712 #define SAA713x_VOLUME(xname, xindex, addr) \
713 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
714 .info = snd_saa7134_volume_info, \
715 .get = snd_saa7134_volume_get, .put = snd_saa7134_volume_put, \
716 .private_value = addr }
717
718 static int snd_saa7134_volume_info(struct snd_kcontrol * kcontrol,
719 struct snd_ctl_elem_info * uinfo)
720 {
721 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
722 uinfo->count = 2;
723 uinfo->value.integer.min = 0;
724 uinfo->value.integer.max = 20;
725 return 0;
726 }
727
728 static int snd_saa7134_volume_get(struct snd_kcontrol * kcontrol,
729 struct snd_ctl_elem_value * ucontrol)
730 {
731 snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
732 int addr = kcontrol->private_value;
733
734 ucontrol->value.integer.value[0] = chip->mixer_volume[addr][0];
735 ucontrol->value.integer.value[1] = chip->mixer_volume[addr][1];
736 return 0;
737 }
738
739 static int snd_saa7134_volume_put(struct snd_kcontrol * kcontrol,
740 struct snd_ctl_elem_value * ucontrol)
741 {
742 snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
743 struct saa7134_dev *dev = chip->dev;
744
745 int change, addr = kcontrol->private_value;
746 int left, right;
747
748 left = ucontrol->value.integer.value[0];
749 if (left < 0)
750 left = 0;
751 if (left > 20)
752 left = 20;
753 right = ucontrol->value.integer.value[1];
754 if (right < 0)
755 right = 0;
756 if (right > 20)
757 right = 20;
758 spin_lock_irq(&chip->mixer_lock);
759 change = 0;
760 if (chip->mixer_volume[addr][0] != left) {
761 change = 1;
762 right = left;
763 }
764 if (chip->mixer_volume[addr][1] != right) {
765 change = 1;
766 left = right;
767 }
768 if (change) {
769 switch (dev->pci->device) {
770 case PCI_DEVICE_ID_PHILIPS_SAA7134:
771 switch (addr) {
772 case MIXER_ADDR_TVTUNER:
773 left = 20;
774 break;
775 case MIXER_ADDR_LINE1:
776 saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x10,
777 (left > 10) ? 0x00 : 0x10);
778 break;
779 case MIXER_ADDR_LINE2:
780 saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x20,
781 (left > 10) ? 0x00 : 0x20);
782 break;
783 }
784 break;
785 case PCI_DEVICE_ID_PHILIPS_SAA7133:
786 case PCI_DEVICE_ID_PHILIPS_SAA7135:
787 switch (addr) {
788 case MIXER_ADDR_TVTUNER:
789 left = 20;
790 break;
791 case MIXER_ADDR_LINE1:
792 saa_andorb(0x0594, 0x10,
793 (left > 10) ? 0x00 : 0x10);
794 break;
795 case MIXER_ADDR_LINE2:
796 saa_andorb(0x0594, 0x20,
797 (left > 10) ? 0x00 : 0x20);
798 break;
799 }
800 break;
801 }
802 chip->mixer_volume[addr][0] = left;
803 chip->mixer_volume[addr][1] = right;
804 }
805 spin_unlock_irq(&chip->mixer_lock);
806 return change;
807 }
808
809 #define SAA713x_CAPSRC(xname, xindex, addr) \
810 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
811 .info = snd_saa7134_capsrc_info, \
812 .get = snd_saa7134_capsrc_get, .put = snd_saa7134_capsrc_put, \
813 .private_value = addr }
814
815 static int snd_saa7134_capsrc_info(struct snd_kcontrol * kcontrol,
816 struct snd_ctl_elem_info * uinfo)
817 {
818 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
819 uinfo->count = 2;
820 uinfo->value.integer.min = 0;
821 uinfo->value.integer.max = 1;
822 return 0;
823 }
824
825 static int snd_saa7134_capsrc_get(struct snd_kcontrol * kcontrol,
826 struct snd_ctl_elem_value * ucontrol)
827 {
828 snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
829 int addr = kcontrol->private_value;
830
831 spin_lock_irq(&chip->mixer_lock);
832 ucontrol->value.integer.value[0] = chip->capture_source[addr][0];
833 ucontrol->value.integer.value[1] = chip->capture_source[addr][1];
834 spin_unlock_irq(&chip->mixer_lock);
835
836 return 0;
837 }
838
839 static int snd_saa7134_capsrc_put(struct snd_kcontrol * kcontrol,
840 struct snd_ctl_elem_value * ucontrol)
841 {
842 snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
843 int change, addr = kcontrol->private_value;
844 int left, right;
845 u32 anabar, xbarin;
846 int analog_io, rate;
847 struct saa7134_dev *dev;
848
849 dev = chip->dev;
850
851 left = ucontrol->value.integer.value[0] & 1;
852 right = ucontrol->value.integer.value[1] & 1;
853 spin_lock_irq(&chip->mixer_lock);
854
855 change = chip->capture_source[addr][0] != left ||
856 chip->capture_source[addr][1] != right;
857 chip->capture_source[addr][0] = left;
858 chip->capture_source[addr][1] = right;
859 dev->dmasound.input=addr;
860 spin_unlock_irq(&chip->mixer_lock);
861
862
863 if (change) {
864 switch (dev->pci->device) {
865
866 case PCI_DEVICE_ID_PHILIPS_SAA7134:
867 switch (addr) {
868 case MIXER_ADDR_TVTUNER:
869 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0xc0);
870 saa_andorb(SAA7134_SIF_SAMPLE_FREQ, 0x03, 0x00);
871 break;
872 case MIXER_ADDR_LINE1:
873 case MIXER_ADDR_LINE2:
874 analog_io = (MIXER_ADDR_LINE1 == addr) ? 0x00 : 0x08;
875 rate = (32000 == dev->dmasound.rate) ? 0x01 : 0x03;
876 saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x08, analog_io);
877 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0x80);
878 saa_andorb(SAA7134_SIF_SAMPLE_FREQ, 0x03, rate);
879 break;
880 }
881
882 break;
883 case PCI_DEVICE_ID_PHILIPS_SAA7133:
884 case PCI_DEVICE_ID_PHILIPS_SAA7135:
885 xbarin = 0x03; // adc
886 anabar = 0;
887 switch (addr) {
888 case MIXER_ADDR_TVTUNER:
889 xbarin = 0; // Demodulator
890 anabar = 2; // DACs
891 break;
892 case MIXER_ADDR_LINE1:
893 anabar = 0; // aux1, aux1
894 break;
895 case MIXER_ADDR_LINE2:
896 anabar = 9; // aux2, aux2
897 break;
898 }
899
900 /* output xbar always main channel */
901 saa_dsp_writel(dev, SAA7133_DIGITAL_OUTPUT_SEL1, 0xbbbb10);
902
903 if (left || right) { // We've got data, turn the input on
904 saa_dsp_writel(dev, SAA7133_DIGITAL_INPUT_XBAR1, xbarin);
905 saa_writel(SAA7133_ANALOG_IO_SELECT, anabar);
906 } else {
907 saa_dsp_writel(dev, SAA7133_DIGITAL_INPUT_XBAR1, 0);
908 saa_writel(SAA7133_ANALOG_IO_SELECT, 0);
909 }
910 break;
911 }
912 }
913
914 return change;
915 }
916
917 static struct snd_kcontrol_new snd_saa7134_controls[] = {
918 SAA713x_VOLUME("Video Volume", 0, MIXER_ADDR_TVTUNER),
919 SAA713x_CAPSRC("Video Capture Switch", 0, MIXER_ADDR_TVTUNER),
920 SAA713x_VOLUME("Line Volume", 1, MIXER_ADDR_LINE1),
921 SAA713x_CAPSRC("Line Capture Switch", 1, MIXER_ADDR_LINE1),
922 SAA713x_VOLUME("Line Volume", 2, MIXER_ADDR_LINE2),
923 SAA713x_CAPSRC("Line Capture Switch", 2, MIXER_ADDR_LINE2),
924 };
925
926 /*
927 * ALSA mixer setup
928 *
929 * Called when initializing the board. Sets up the name and hooks up
930 * the callbacks
931 *
932 */
933
934 static int snd_card_saa7134_new_mixer(snd_card_saa7134_t * chip)
935 {
936 struct snd_card *card = chip->card;
937 unsigned int idx;
938 int err;
939
940 snd_assert(chip != NULL, return -EINVAL);
941 strcpy(card->mixername, "SAA7134 Mixer");
942
943 for (idx = 0; idx < ARRAY_SIZE(snd_saa7134_controls); idx++) {
944 if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_saa7134_controls[idx], chip))) < 0)
945 return err;
946 }
947 return 0;
948 }
949
950 static void snd_saa7134_free(struct snd_card * card)
951 {
952 snd_card_saa7134_t *chip = card->private_data;
953
954 if (chip->dev->dmasound.priv_data == NULL)
955 return;
956
957 if (chip->irq >= 0) {
958 synchronize_irq(chip->irq);
959 free_irq(chip->irq, &chip->dev->dmasound);
960 }
961
962 chip->dev->dmasound.priv_data = NULL;
963
964 }
965
966 /*
967 * ALSA initialization
968 *
969 * Called by the init routine, once for each saa7134 device present,
970 * it creates the basic structures and registers the ALSA devices
971 *
972 */
973
974 static int alsa_card_saa7134_create(struct saa7134_dev *dev, int devnum)
975 {
976
977 struct snd_card *card;
978 snd_card_saa7134_t *chip;
979 int err;
980
981
982 if (devnum >= SNDRV_CARDS)
983 return -ENODEV;
984 if (!enable[devnum])
985 return -ENODEV;
986
987 card = snd_card_new(index[devnum], id[devnum], THIS_MODULE, sizeof(snd_card_saa7134_t));
988
989 if (card == NULL)
990 return -ENOMEM;
991
992 strcpy(card->driver, "SAA7134");
993
994 /* Card "creation" */
995
996 card->private_free = snd_saa7134_free;
997 chip = (snd_card_saa7134_t *) card->private_data;
998
999 spin_lock_init(&chip->lock);
1000 spin_lock_init(&chip->mixer_lock);
1001
1002 chip->dev = dev;
1003
1004 chip->card = card;
1005
1006 chip->pci = dev->pci;
1007 chip->iobase = pci_resource_start(dev->pci, 0);
1008
1009
1010 err = request_irq(dev->pci->irq, saa7134_alsa_irq,
1011 IRQF_SHARED | IRQF_DISABLED, dev->name,
1012 (void*) &dev->dmasound);
1013
1014 if (err < 0) {
1015 printk(KERN_ERR "%s: can't get IRQ %d for ALSA\n",
1016 dev->name, dev->pci->irq);
1017 goto __nodev;
1018 }
1019
1020 chip->irq = dev->pci->irq;
1021
1022 mutex_init(&dev->dmasound.lock);
1023
1024 if ((err = snd_card_saa7134_new_mixer(chip)) < 0)
1025 goto __nodev;
1026
1027 if ((err = snd_card_saa7134_pcm(chip, 0)) < 0)
1028 goto __nodev;
1029
1030 snd_card_set_dev(card, &chip->pci->dev);
1031
1032 /* End of "creation" */
1033
1034 strcpy(card->shortname, "SAA7134");
1035 sprintf(card->longname, "%s at 0x%lx irq %d",
1036 chip->dev->name, chip->iobase, chip->irq);
1037
1038 printk(KERN_INFO "%s/alsa: %s registered as card %d\n",dev->name,card->longname,index[devnum]);
1039
1040 if ((err = snd_card_register(card)) == 0) {
1041 snd_saa7134_cards[devnum] = card;
1042 return 0;
1043 }
1044
1045 __nodev:
1046 snd_card_free(card);
1047 return err;
1048 }
1049
1050
1051 static int alsa_device_init(struct saa7134_dev *dev)
1052 {
1053 dev->dmasound.priv_data = dev;
1054 alsa_card_saa7134_create(dev,dev->nr);
1055 return 1;
1056 }
1057
1058 static int alsa_device_exit(struct saa7134_dev *dev)
1059 {
1060
1061 snd_card_free(snd_saa7134_cards[dev->nr]);
1062 snd_saa7134_cards[dev->nr] = NULL;
1063 return 1;
1064 }
1065
1066 /*
1067 * Module initializer
1068 *
1069 * Loops through present saa7134 cards, and assigns an ALSA device
1070 * to each one
1071 *
1072 */
1073
1074 static int saa7134_alsa_init(void)
1075 {
1076 struct saa7134_dev *dev = NULL;
1077 struct list_head *list;
1078
1079 saa7134_dmasound_init = alsa_device_init;
1080 saa7134_dmasound_exit = alsa_device_exit;
1081
1082 printk(KERN_INFO "saa7134 ALSA driver for DMA sound loaded\n");
1083
1084 list_for_each(list,&saa7134_devlist) {
1085 dev = list_entry(list, struct saa7134_dev, devlist);
1086 alsa_device_init(dev);
1087 }
1088
1089 if (dev == NULL)
1090 printk(KERN_INFO "saa7134 ALSA: no saa7134 cards found\n");
1091
1092 return 0;
1093
1094 }
1095
1096 /*
1097 * Module destructor
1098 */
1099
1100 static void saa7134_alsa_exit(void)
1101 {
1102 int idx;
1103
1104 for (idx = 0; idx < SNDRV_CARDS; idx++) {
1105 snd_card_free(snd_saa7134_cards[idx]);
1106 }
1107
1108 saa7134_dmasound_init = NULL;
1109 saa7134_dmasound_exit = NULL;
1110 printk(KERN_INFO "saa7134 ALSA driver for DMA sound unloaded\n");
1111
1112 return;
1113 }
1114
1115 /* We initialize this late, to make sure the sound system is up and running */
1116 late_initcall(saa7134_alsa_init);
1117 module_exit(saa7134_alsa_exit);
1118 MODULE_LICENSE("GPL");
1119 MODULE_AUTHOR("Ricardo Cerqueira");
1120
1121
1122
WRT350N Kernel Patches