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Driver Core: devtmpfs - kernel-maintained tmpfs-based /dev
[linux/fpc-iii.git] / drivers / media / video / saa7134 / saa7134-alsa.c
blob8b0b64a89874dcbaa1e591c72af22074477a8c88
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;
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 * PCM structure
85 */
86
87 typedef struct snd_card_saa7134_pcm {
88 struct saa7134_dev *dev;
89
90 spinlock_t lock;
91
92 struct snd_pcm_substream *substream;
93 } snd_card_saa7134_pcm_t;
94
95 static struct snd_card *snd_saa7134_cards[SNDRV_CARDS];
96
97
98 /*
99 * saa7134 DMA audio stop
100 *
101 * Called when the capture device is released or the buffer overflows
102 *
103 * - Copied verbatim from saa7134-oss's dsp_dma_stop.
104 *
105 */
106
107 static void saa7134_dma_stop(struct saa7134_dev *dev)
108 {
109 dev->dmasound.dma_blk = -1;
110 dev->dmasound.dma_running = 0;
111 saa7134_set_dmabits(dev);
112 }
113
114 /*
115 * saa7134 DMA audio start
116 *
117 * Called when preparing the capture device for use
118 *
119 * - Copied verbatim from saa7134-oss's dsp_dma_start.
120 *
121 */
122
123 static void saa7134_dma_start(struct saa7134_dev *dev)
124 {
125 dev->dmasound.dma_blk = 0;
126 dev->dmasound.dma_running = 1;
127 saa7134_set_dmabits(dev);
128 }
129
130 /*
131 * saa7134 audio DMA IRQ handler
132 *
133 * Called whenever we get an SAA7134_IRQ_REPORT_DONE_RA3 interrupt
134 * Handles shifting between the 2 buffers, manages the read counters,
135 * and notifies ALSA when periods elapse
136 *
137 * - Mostly copied from saa7134-oss's saa7134_irq_oss_done.
138 *
139 */
140
141 static void saa7134_irq_alsa_done(struct saa7134_dev *dev,
142 unsigned long status)
143 {
144 int next_blk, reg = 0;
145
146 spin_lock(&dev->slock);
147 if (UNSET == dev->dmasound.dma_blk) {
148 dprintk("irq: recording stopped\n");
149 goto done;
150 }
151 if (0 != (status & 0x0f000000))
152 dprintk("irq: lost %ld\n", (status >> 24) & 0x0f);
153 if (0 == (status & 0x10000000)) {
154 /* odd */
155 if (0 == (dev->dmasound.dma_blk & 0x01))
156 reg = SAA7134_RS_BA1(6);
157 } else {
158 /* even */
159 if (1 == (dev->dmasound.dma_blk & 0x01))
160 reg = SAA7134_RS_BA2(6);
161 }
162 if (0 == reg) {
163 dprintk("irq: field oops [%s]\n",
164 (status & 0x10000000) ? "even" : "odd");
165 goto done;
166 }
167
168 if (dev->dmasound.read_count >= dev->dmasound.blksize * (dev->dmasound.blocks-2)) {
169 dprintk("irq: overrun [full=%d/%d] - Blocks in %d\n",dev->dmasound.read_count,
170 dev->dmasound.bufsize, dev->dmasound.blocks);
171 spin_unlock(&dev->slock);
172 snd_pcm_stop(dev->dmasound.substream,SNDRV_PCM_STATE_XRUN);
173 return;
174 }
175
176 /* next block addr */
177 next_blk = (dev->dmasound.dma_blk + 2) % dev->dmasound.blocks;
178 saa_writel(reg,next_blk * dev->dmasound.blksize);
179 if (debug > 2)
180 dprintk("irq: ok, %s, next_blk=%d, addr=%x, blocks=%u, size=%u, read=%u\n",
181 (status & 0x10000000) ? "even" : "odd ", next_blk,
182 next_blk * dev->dmasound.blksize, dev->dmasound.blocks, dev->dmasound.blksize, dev->dmasound.read_count);
183
184 /* update status & wake waiting readers */
185 dev->dmasound.dma_blk = (dev->dmasound.dma_blk + 1) % dev->dmasound.blocks;
186 dev->dmasound.read_count += dev->dmasound.blksize;
187
188 dev->dmasound.recording_on = reg;
189
190 if (dev->dmasound.read_count >= snd_pcm_lib_period_bytes(dev->dmasound.substream)) {
191 spin_unlock(&dev->slock);
192 snd_pcm_period_elapsed(dev->dmasound.substream);
193 spin_lock(&dev->slock);
194 }
195
196 done:
197 spin_unlock(&dev->slock);
198
199 }
200
201 /*
202 * IRQ request handler
203 *
204 * Runs along with saa7134's IRQ handler, discards anything that isn't
205 * DMA sound
206 *
207 */
208
209 static irqreturn_t saa7134_alsa_irq(int irq, void *dev_id)
210 {
211 struct saa7134_dmasound *dmasound = dev_id;
212 struct saa7134_dev *dev = dmasound->priv_data;
213
214 unsigned long report, status;
215 int loop, handled = 0;
216
217 for (loop = 0; loop < 10; loop++) {
218 report = saa_readl(SAA7134_IRQ_REPORT);
219 status = saa_readl(SAA7134_IRQ_STATUS);
220
221 if (report & SAA7134_IRQ_REPORT_DONE_RA3) {
222 handled = 1;
223 saa_writel(SAA7134_IRQ_REPORT,
224 SAA7134_IRQ_REPORT_DONE_RA3);
225 saa7134_irq_alsa_done(dev, status);
226 } else {
227 goto out;
228 }
229 }
230
231 if (loop == 10) {
232 dprintk("error! looping IRQ!");
233 }
234
235 out:
236 return IRQ_RETVAL(handled);
237 }
238
239 /*
240 * ALSA capture trigger
241 *
242 * - One of the ALSA capture callbacks.
243 *
244 * Called whenever a capture is started or stopped. Must be defined,
245 * but there's nothing we want to do here
246 *
247 */
248
249 static int snd_card_saa7134_capture_trigger(struct snd_pcm_substream * substream,
250 int cmd)
251 {
252 struct snd_pcm_runtime *runtime = substream->runtime;
253 snd_card_saa7134_pcm_t *pcm = runtime->private_data;
254 struct saa7134_dev *dev=pcm->dev;
255 int err = 0;
256
257 spin_lock(&dev->slock);
258 if (cmd == SNDRV_PCM_TRIGGER_START) {
259 /* start dma */
260 saa7134_dma_start(dev);
261 } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
262 /* stop dma */
263 saa7134_dma_stop(dev);
264 } else {
265 err = -EINVAL;
266 }
267 spin_unlock(&dev->slock);
268
269 return err;
270 }
271
272 /*
273 * DMA buffer initialization
274 *
275 * Uses V4L functions to initialize the DMA. Shouldn't be necessary in
276 * ALSA, but I was unable to use ALSA's own DMA, and had to force the
277 * usage of V4L's
278 *
279 * - Copied verbatim from saa7134-oss.
280 *
281 */
282
283 static int dsp_buffer_init(struct saa7134_dev *dev)
284 {
285 int err;
286
287 BUG_ON(!dev->dmasound.bufsize);
288
289 videobuf_dma_init(&dev->dmasound.dma);
290 err = videobuf_dma_init_kernel(&dev->dmasound.dma, PCI_DMA_FROMDEVICE,
291 (dev->dmasound.bufsize + PAGE_SIZE) >> PAGE_SHIFT);
292 if (0 != err)
293 return err;
294 return 0;
295 }
296
297 /*
298 * DMA buffer release
299 *
300 * Called after closing the device, during snd_card_saa7134_capture_close
301 *
302 */
303
304 static int dsp_buffer_free(struct saa7134_dev *dev)
305 {
306 BUG_ON(!dev->dmasound.blksize);
307
308 videobuf_dma_free(&dev->dmasound.dma);
309
310 dev->dmasound.blocks = 0;
311 dev->dmasound.blksize = 0;
312 dev->dmasound.bufsize = 0;
313
314 return 0;
315 }
316
317
318 /*
319 * ALSA PCM preparation
320 *
321 * - One of the ALSA capture callbacks.
322 *
323 * Called right after the capture device is opened, this function configures
324 * the buffer using the previously defined functions, allocates the memory,
325 * sets up the hardware registers, and then starts the DMA. When this function
326 * returns, the audio should be flowing.
327 *
328 */
329
330 static int snd_card_saa7134_capture_prepare(struct snd_pcm_substream * substream)
331 {
332 struct snd_pcm_runtime *runtime = substream->runtime;
333 int bswap, sign;
334 u32 fmt, control;
335 snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
336 struct saa7134_dev *dev;
337 snd_card_saa7134_pcm_t *pcm = runtime->private_data;
338
339 pcm->dev->dmasound.substream = substream;
340
341 dev = saa7134->dev;
342
343 if (snd_pcm_format_width(runtime->format) == 8)
344 fmt = 0x00;
345 else
346 fmt = 0x01;
347
348 if (snd_pcm_format_signed(runtime->format))
349 sign = 1;
350 else
351 sign = 0;
352
353 if (snd_pcm_format_big_endian(runtime->format))
354 bswap = 1;
355 else
356 bswap = 0;
357
358 switch (dev->pci->device) {
359 case PCI_DEVICE_ID_PHILIPS_SAA7134:
360 if (1 == runtime->channels)
361 fmt |= (1 << 3);
362 if (2 == runtime->channels)
363 fmt |= (3 << 3);
364 if (sign)
365 fmt |= 0x04;
366
367 fmt |= (MIXER_ADDR_TVTUNER == dev->dmasound.input) ? 0xc0 : 0x80;
368 saa_writeb(SAA7134_NUM_SAMPLES0, ((dev->dmasound.blksize - 1) & 0x0000ff));
369 saa_writeb(SAA7134_NUM_SAMPLES1, ((dev->dmasound.blksize - 1) & 0x00ff00) >> 8);
370 saa_writeb(SAA7134_NUM_SAMPLES2, ((dev->dmasound.blksize - 1) & 0xff0000) >> 16);
371 saa_writeb(SAA7134_AUDIO_FORMAT_CTRL, fmt);
372
373 break;
374 case PCI_DEVICE_ID_PHILIPS_SAA7133:
375 case PCI_DEVICE_ID_PHILIPS_SAA7135:
376 if (1 == runtime->channels)
377 fmt |= (1 << 4);
378 if (2 == runtime->channels)
379 fmt |= (2 << 4);
380 if (!sign)
381 fmt |= 0x04;
382 saa_writel(SAA7133_NUM_SAMPLES, dev->dmasound.blksize -1);
383 saa_writel(SAA7133_AUDIO_CHANNEL, 0x543210 | (fmt << 24));
384 break;
385 }
386
387 dprintk("rec_start: afmt=%d ch=%d => fmt=0x%x swap=%c\n",
388 runtime->format, runtime->channels, fmt,
389 bswap ? 'b' : '-');
390 /* dma: setup channel 6 (= AUDIO) */
391 control = SAA7134_RS_CONTROL_BURST_16 |
392 SAA7134_RS_CONTROL_ME |
393 (dev->dmasound.pt.dma >> 12);
394 if (bswap)
395 control |= SAA7134_RS_CONTROL_BSWAP;
396
397 saa_writel(SAA7134_RS_BA1(6),0);
398 saa_writel(SAA7134_RS_BA2(6),dev->dmasound.blksize);
399 saa_writel(SAA7134_RS_PITCH(6),0);
400 saa_writel(SAA7134_RS_CONTROL(6),control);
401
402 dev->dmasound.rate = runtime->rate;
403
404 return 0;
405
406 }
407
408 /*
409 * ALSA pointer fetching
410 *
411 * - One of the ALSA capture callbacks.
412 *
413 * Called whenever a period elapses, it must return the current hardware
414 * position of the buffer.
415 * Also resets the read counter used to prevent overruns
416 *
417 */
418
419 static snd_pcm_uframes_t
420 snd_card_saa7134_capture_pointer(struct snd_pcm_substream * substream)
421 {
422 struct snd_pcm_runtime *runtime = substream->runtime;
423 snd_card_saa7134_pcm_t *pcm = runtime->private_data;
424 struct saa7134_dev *dev=pcm->dev;
425
426 if (dev->dmasound.read_count) {
427 dev->dmasound.read_count -= snd_pcm_lib_period_bytes(substream);
428 dev->dmasound.read_offset += snd_pcm_lib_period_bytes(substream);
429 if (dev->dmasound.read_offset == dev->dmasound.bufsize)
430 dev->dmasound.read_offset = 0;
431 }
432
433 return bytes_to_frames(runtime, dev->dmasound.read_offset);
434 }
435
436 /*
437 * ALSA hardware capabilities definition
438 */
439
440 static struct snd_pcm_hardware snd_card_saa7134_capture =
441 {
442 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
443 SNDRV_PCM_INFO_BLOCK_TRANSFER |
444 SNDRV_PCM_INFO_MMAP_VALID),
445 .formats = SNDRV_PCM_FMTBIT_S16_LE | \
446 SNDRV_PCM_FMTBIT_S16_BE | \
447 SNDRV_PCM_FMTBIT_S8 | \
448 SNDRV_PCM_FMTBIT_U8 | \
449 SNDRV_PCM_FMTBIT_U16_LE | \
450 SNDRV_PCM_FMTBIT_U16_BE,
451 .rates = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_48000,
452 .rate_min = 32000,
453 .rate_max = 48000,
454 .channels_min = 1,
455 .channels_max = 2,
456 .buffer_bytes_max = (256*1024),
457 .period_bytes_min = 64,
458 .period_bytes_max = (256*1024),
459 .periods_min = 4,
460 .periods_max = 1024,
461 };
462
463 static void snd_card_saa7134_runtime_free(struct snd_pcm_runtime *runtime)
464 {
465 snd_card_saa7134_pcm_t *pcm = runtime->private_data;
466
467 kfree(pcm);
468 }
469
470
471 /*
472 * ALSA hardware params
473 *
474 * - One of the ALSA capture callbacks.
475 *
476 * Called on initialization, right before the PCM preparation
477 *
478 */
479
480 static int snd_card_saa7134_hw_params(struct snd_pcm_substream * substream,
481 struct snd_pcm_hw_params * hw_params)
482 {
483 snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
484 struct saa7134_dev *dev;
485 unsigned int period_size, periods;
486 int err;
487
488 period_size = params_period_bytes(hw_params);
489 periods = params_periods(hw_params);
490
491 if (period_size < 0x100 || period_size > 0x10000)
492 return -EINVAL;
493 if (periods < 4)
494 return -EINVAL;
495 if (period_size * periods > 1024 * 1024)
496 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_sg_dma_unmap(&dev->pci->dev, &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_sg_dma_map(&dev->pci->dev, &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_sg_dma_unmap(&dev->pci->dev, &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_sg_dma_unmap(&dev->pci->dev, &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_sg_dma_unmap(&dev->pci->dev, &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;
618 int amux, err;
619
620 if (!saa7134) {
621 printk(KERN_ERR "BUG: saa7134 can't find device struct."
622 " Can't proceed with open\n");
623 return -ENODEV;
624 }
625 dev = saa7134->dev;
626 mutex_lock(&dev->dmasound.lock);
627
628 dev->dmasound.read_count = 0;
629 dev->dmasound.read_offset = 0;
630
631 amux = dev->input->amux;
632 if ((amux < 1) || (amux > 3))
633 amux = 1;
634 dev->dmasound.input = amux - 1;
635
636 mutex_unlock(&dev->dmasound.lock);
637
638 pcm = kzalloc(sizeof(*pcm), GFP_KERNEL);
639 if (pcm == NULL)
640 return -ENOMEM;
641
642 pcm->dev=saa7134->dev;
643
644 spin_lock_init(&pcm->lock);
645
646 pcm->substream = substream;
647 runtime->private_data = pcm;
648 runtime->private_free = snd_card_saa7134_runtime_free;
649 runtime->hw = snd_card_saa7134_capture;
650
651 if (dev->ctl_mute != 0) {
652 saa7134->mute_was_on = 1;
653 dev->ctl_mute = 0;
654 saa7134_tvaudio_setmute(dev);
655 }
656
657 err = snd_pcm_hw_constraint_integer(runtime,
658 SNDRV_PCM_HW_PARAM_PERIODS);
659 if (err < 0)
660 return err;
661
662 err = snd_pcm_hw_constraint_step(runtime, 0,
663 SNDRV_PCM_HW_PARAM_PERIODS, 2);
664 if (err < 0)
665 return err;
666
667 return 0;
668 }
669
670 /*
671 * page callback (needed for mmap)
672 */
673
674 static struct page *snd_card_saa7134_page(struct snd_pcm_substream *substream,
675 unsigned long offset)
676 {
677 void *pageptr = substream->runtime->dma_area + offset;
678 return vmalloc_to_page(pageptr);
679 }
680
681 /*
682 * ALSA capture callbacks definition
683 */
684
685 static struct snd_pcm_ops snd_card_saa7134_capture_ops = {
686 .open = snd_card_saa7134_capture_open,
687 .close = snd_card_saa7134_capture_close,
688 .ioctl = snd_pcm_lib_ioctl,
689 .hw_params = snd_card_saa7134_hw_params,
690 .hw_free = snd_card_saa7134_hw_free,
691 .prepare = snd_card_saa7134_capture_prepare,
692 .trigger = snd_card_saa7134_capture_trigger,
693 .pointer = snd_card_saa7134_capture_pointer,
694 .page = snd_card_saa7134_page,
695 };
696
697 /*
698 * ALSA PCM setup
699 *
700 * Called when initializing the board. Sets up the name and hooks up
701 * the callbacks
702 *
703 */
704
705 static int snd_card_saa7134_pcm(snd_card_saa7134_t *saa7134, int device)
706 {
707 struct snd_pcm *pcm;
708 int err;
709
710 if ((err = snd_pcm_new(saa7134->card, "SAA7134 PCM", device, 0, 1, &pcm)) < 0)
711 return err;
712 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_card_saa7134_capture_ops);
713 pcm->private_data = saa7134;
714 pcm->info_flags = 0;
715 strcpy(pcm->name, "SAA7134 PCM");
716 return 0;
717 }
718
719 #define SAA713x_VOLUME(xname, xindex, addr) \
720 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
721 .info = snd_saa7134_volume_info, \
722 .get = snd_saa7134_volume_get, .put = snd_saa7134_volume_put, \
723 .private_value = addr }
724
725 static int snd_saa7134_volume_info(struct snd_kcontrol * kcontrol,
726 struct snd_ctl_elem_info * uinfo)
727 {
728 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
729 uinfo->count = 2;
730 uinfo->value.integer.min = 0;
731 uinfo->value.integer.max = 20;
732 return 0;
733 }
734
735 static int snd_saa7134_volume_get(struct snd_kcontrol * kcontrol,
736 struct snd_ctl_elem_value * ucontrol)
737 {
738 snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
739 int addr = kcontrol->private_value;
740
741 ucontrol->value.integer.value[0] = chip->mixer_volume[addr][0];
742 ucontrol->value.integer.value[1] = chip->mixer_volume[addr][1];
743 return 0;
744 }
745
746 static int snd_saa7134_volume_put(struct snd_kcontrol * kcontrol,
747 struct snd_ctl_elem_value * ucontrol)
748 {
749 snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
750 struct saa7134_dev *dev = chip->dev;
751
752 int change, addr = kcontrol->private_value;
753 int left, right;
754
755 left = ucontrol->value.integer.value[0];
756 if (left < 0)
757 left = 0;
758 if (left > 20)
759 left = 20;
760 right = ucontrol->value.integer.value[1];
761 if (right < 0)
762 right = 0;
763 if (right > 20)
764 right = 20;
765 spin_lock_irq(&chip->mixer_lock);
766 change = 0;
767 if (chip->mixer_volume[addr][0] != left) {
768 change = 1;
769 right = left;
770 }
771 if (chip->mixer_volume[addr][1] != right) {
772 change = 1;
773 left = right;
774 }
775 if (change) {
776 switch (dev->pci->device) {
777 case PCI_DEVICE_ID_PHILIPS_SAA7134:
778 switch (addr) {
779 case MIXER_ADDR_TVTUNER:
780 left = 20;
781 break;
782 case MIXER_ADDR_LINE1:
783 saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x10,
784 (left > 10) ? 0x00 : 0x10);
785 break;
786 case MIXER_ADDR_LINE2:
787 saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x20,
788 (left > 10) ? 0x00 : 0x20);
789 break;
790 }
791 break;
792 case PCI_DEVICE_ID_PHILIPS_SAA7133:
793 case PCI_DEVICE_ID_PHILIPS_SAA7135:
794 switch (addr) {
795 case MIXER_ADDR_TVTUNER:
796 left = 20;
797 break;
798 case MIXER_ADDR_LINE1:
799 saa_andorb(0x0594, 0x10,
800 (left > 10) ? 0x00 : 0x10);
801 break;
802 case MIXER_ADDR_LINE2:
803 saa_andorb(0x0594, 0x20,
804 (left > 10) ? 0x00 : 0x20);
805 break;
806 }
807 break;
808 }
809 chip->mixer_volume[addr][0] = left;
810 chip->mixer_volume[addr][1] = right;
811 }
812 spin_unlock_irq(&chip->mixer_lock);
813 return change;
814 }
815
816 #define SAA713x_CAPSRC(xname, xindex, addr) \
817 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
818 .info = snd_saa7134_capsrc_info, \
819 .get = snd_saa7134_capsrc_get, .put = snd_saa7134_capsrc_put, \
820 .private_value = addr }
821
822 static int snd_saa7134_capsrc_info(struct snd_kcontrol * kcontrol,
823 struct snd_ctl_elem_info * uinfo)
824 {
825 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
826 uinfo->count = 2;
827 uinfo->value.integer.min = 0;
828 uinfo->value.integer.max = 1;
829 return 0;
830 }
831
832 static int snd_saa7134_capsrc_get(struct snd_kcontrol * kcontrol,
833 struct snd_ctl_elem_value * ucontrol)
834 {
835 snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
836 int addr = kcontrol->private_value;
837
838 spin_lock_irq(&chip->mixer_lock);
839 ucontrol->value.integer.value[0] = chip->capture_source[addr][0];
840 ucontrol->value.integer.value[1] = chip->capture_source[addr][1];
841 spin_unlock_irq(&chip->mixer_lock);
842
843 return 0;
844 }
845
846 static int snd_saa7134_capsrc_put(struct snd_kcontrol * kcontrol,
847 struct snd_ctl_elem_value * ucontrol)
848 {
849 snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
850 int change, addr = kcontrol->private_value;
851 int left, right;
852 u32 anabar, xbarin;
853 int analog_io, rate;
854 struct saa7134_dev *dev;
855
856 dev = chip->dev;
857
858 left = ucontrol->value.integer.value[0] & 1;
859 right = ucontrol->value.integer.value[1] & 1;
860 spin_lock_irq(&chip->mixer_lock);
861
862 change = chip->capture_source[addr][0] != left ||
863 chip->capture_source[addr][1] != right;
864 chip->capture_source[addr][0] = left;
865 chip->capture_source[addr][1] = right;
866 dev->dmasound.input=addr;
867 spin_unlock_irq(&chip->mixer_lock);
868
869
870 if (change) {
871 switch (dev->pci->device) {
872
873 case PCI_DEVICE_ID_PHILIPS_SAA7134:
874 switch (addr) {
875 case MIXER_ADDR_TVTUNER:
876 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0xc0);
877 saa_andorb(SAA7134_SIF_SAMPLE_FREQ, 0x03, 0x00);
878 break;
879 case MIXER_ADDR_LINE1:
880 case MIXER_ADDR_LINE2:
881 analog_io = (MIXER_ADDR_LINE1 == addr) ? 0x00 : 0x08;
882 rate = (32000 == dev->dmasound.rate) ? 0x01 : 0x03;
883 saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x08, analog_io);
884 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0x80);
885 saa_andorb(SAA7134_SIF_SAMPLE_FREQ, 0x03, rate);
886 break;
887 }
888
889 break;
890 case PCI_DEVICE_ID_PHILIPS_SAA7133:
891 case PCI_DEVICE_ID_PHILIPS_SAA7135:
892 xbarin = 0x03; // adc
893 anabar = 0;
894 switch (addr) {
895 case MIXER_ADDR_TVTUNER:
896 xbarin = 0; // Demodulator
897 anabar = 2; // DACs
898 break;
899 case MIXER_ADDR_LINE1:
900 anabar = 0; // aux1, aux1
901 break;
902 case MIXER_ADDR_LINE2:
903 anabar = 9; // aux2, aux2
904 break;
905 }
906
907 /* output xbar always main channel */
908 saa_dsp_writel(dev, SAA7133_DIGITAL_OUTPUT_SEL1, 0xbbbb10);
909
910 if (left || right) { // We've got data, turn the input on
911 saa_dsp_writel(dev, SAA7133_DIGITAL_INPUT_XBAR1, xbarin);
912 saa_writel(SAA7133_ANALOG_IO_SELECT, anabar);
913 } else {
914 saa_dsp_writel(dev, SAA7133_DIGITAL_INPUT_XBAR1, 0);
915 saa_writel(SAA7133_ANALOG_IO_SELECT, 0);
916 }
917 break;
918 }
919 }
920
921 return change;
922 }
923
924 static struct snd_kcontrol_new snd_saa7134_controls[] = {
925 SAA713x_VOLUME("Video Volume", 0, MIXER_ADDR_TVTUNER),
926 SAA713x_CAPSRC("Video Capture Switch", 0, MIXER_ADDR_TVTUNER),
927 SAA713x_VOLUME("Line Volume", 1, MIXER_ADDR_LINE1),
928 SAA713x_CAPSRC("Line Capture Switch", 1, MIXER_ADDR_LINE1),
929 SAA713x_VOLUME("Line Volume", 2, MIXER_ADDR_LINE2),
930 SAA713x_CAPSRC("Line Capture Switch", 2, MIXER_ADDR_LINE2),
931 };
932
933 /*
934 * ALSA mixer setup
935 *
936 * Called when initializing the board. Sets up the name and hooks up
937 * the callbacks
938 *
939 */
940
941 static int snd_card_saa7134_new_mixer(snd_card_saa7134_t * chip)
942 {
943 struct snd_card *card = chip->card;
944 unsigned int idx;
945 int err;
946
947 if (snd_BUG_ON(!chip))
948 return -EINVAL;
949 strcpy(card->mixername, "SAA7134 Mixer");
950
951 for (idx = 0; idx < ARRAY_SIZE(snd_saa7134_controls); idx++) {
952 if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_saa7134_controls[idx], chip))) < 0)
953 return err;
954 }
955 return 0;
956 }
957
958 static void snd_saa7134_free(struct snd_card * card)
959 {
960 snd_card_saa7134_t *chip = card->private_data;
961
962 if (chip->dev->dmasound.priv_data == NULL)
963 return;
964
965 if (chip->irq >= 0)
966 free_irq(chip->irq, &chip->dev->dmasound);
967
968 chip->dev->dmasound.priv_data = NULL;
969
970 }
971
972 /*
973 * ALSA initialization
974 *
975 * Called by the init routine, once for each saa7134 device present,
976 * it creates the basic structures and registers the ALSA devices
977 *
978 */
979
980 static int alsa_card_saa7134_create(struct saa7134_dev *dev, int devnum)
981 {
982
983 struct snd_card *card;
984 snd_card_saa7134_t *chip;
985 int err;
986
987
988 if (devnum >= SNDRV_CARDS)
989 return -ENODEV;
990 if (!enable[devnum])
991 return -ENODEV;
992
993 err = snd_card_create(index[devnum], id[devnum], THIS_MODULE,
994 sizeof(snd_card_saa7134_t), &card);
995 if (err < 0)
996 return err;
997
998 strcpy(card->driver, "SAA7134");
999
1000 /* Card "creation" */
1001
1002 card->private_free = snd_saa7134_free;
1003 chip = (snd_card_saa7134_t *) card->private_data;
1004
1005 spin_lock_init(&chip->lock);
1006 spin_lock_init(&chip->mixer_lock);
1007
1008 chip->dev = dev;
1009
1010 chip->card = card;
1011
1012 chip->pci = dev->pci;
1013 chip->iobase = pci_resource_start(dev->pci, 0);
1014
1015
1016 err = request_irq(dev->pci->irq, saa7134_alsa_irq,
1017 IRQF_SHARED | IRQF_DISABLED, dev->name,
1018 (void*) &dev->dmasound);
1019
1020 if (err < 0) {
1021 printk(KERN_ERR "%s: can't get IRQ %d for ALSA\n",
1022 dev->name, dev->pci->irq);
1023 goto __nodev;
1024 }
1025
1026 chip->irq = dev->pci->irq;
1027
1028 mutex_init(&dev->dmasound.lock);
1029
1030 if ((err = snd_card_saa7134_new_mixer(chip)) < 0)
1031 goto __nodev;
1032
1033 if ((err = snd_card_saa7134_pcm(chip, 0)) < 0)
1034 goto __nodev;
1035
1036 snd_card_set_dev(card, &chip->pci->dev);
1037
1038 /* End of "creation" */
1039
1040 strcpy(card->shortname, "SAA7134");
1041 sprintf(card->longname, "%s at 0x%lx irq %d",
1042 chip->dev->name, chip->iobase, chip->irq);
1043
1044 printk(KERN_INFO "%s/alsa: %s registered as card %d\n",dev->name,card->longname,index[devnum]);
1045
1046 if ((err = snd_card_register(card)) == 0) {
1047 snd_saa7134_cards[devnum] = card;
1048 return 0;
1049 }
1050
1051 __nodev:
1052 snd_card_free(card);
1053 return err;
1054 }
1055
1056
1057 static int alsa_device_init(struct saa7134_dev *dev)
1058 {
1059 dev->dmasound.priv_data = dev;
1060 alsa_card_saa7134_create(dev,dev->nr);
1061 return 1;
1062 }
1063
1064 static int alsa_device_exit(struct saa7134_dev *dev)
1065 {
1066
1067 snd_card_free(snd_saa7134_cards[dev->nr]);
1068 snd_saa7134_cards[dev->nr] = NULL;
1069 return 1;
1070 }
1071
1072 /*
1073 * Module initializer
1074 *
1075 * Loops through present saa7134 cards, and assigns an ALSA device
1076 * to each one
1077 *
1078 */
1079
1080 static int saa7134_alsa_init(void)
1081 {
1082 struct saa7134_dev *dev = NULL;
1083 struct list_head *list;
1084
1085 saa7134_dmasound_init = alsa_device_init;
1086 saa7134_dmasound_exit = alsa_device_exit;
1087
1088 printk(KERN_INFO "saa7134 ALSA driver for DMA sound loaded\n");
1089
1090 list_for_each(list,&saa7134_devlist) {
1091 dev = list_entry(list, struct saa7134_dev, devlist);
1092 if (dev->pci->device == PCI_DEVICE_ID_PHILIPS_SAA7130)
1093 printk(KERN_INFO "%s/alsa: %s doesn't support digital audio\n",
1094 dev->name, saa7134_boards[dev->board].name);
1095 else
1096 alsa_device_init(dev);
1097 }
1098
1099 if (dev == NULL)
1100 printk(KERN_INFO "saa7134 ALSA: no saa7134 cards found\n");
1101
1102 return 0;
1103
1104 }
1105
1106 /*
1107 * Module destructor
1108 */
1109
1110 static void saa7134_alsa_exit(void)
1111 {
1112 int idx;
1113
1114 for (idx = 0; idx < SNDRV_CARDS; idx++) {
1115 snd_card_free(snd_saa7134_cards[idx]);
1116 }
1117
1118 saa7134_dmasound_init = NULL;
1119 saa7134_dmasound_exit = NULL;
1120 printk(KERN_INFO "saa7134 ALSA driver for DMA sound unloaded\n");
1121
1122 return;
1123 }
1124
1125 /* We initialize this late, to make sure the sound system is up and running */
1126 late_initcall(saa7134_alsa_init);
1127 module_exit(saa7134_alsa_exit);
1128 MODULE_LICENSE("GPL");
1129 MODULE_AUTHOR("Ricardo Cerqueira");
Linux with added FPC-III support