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V4L/DVB (6006): tuner: move last_div to tuner-simple private data
[wrt350n-kernel.git] / drivers / media / video / saa7134 / saa7134-alsa.c
blob3c0fc9027ad01118d8c67ee0e82fe74ab4597741
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/moduleparam.h>
24 #include <linux/module.h>
25 #include <sound/driver.h>
26 #include <sound/core.h>
27 #include <sound/control.h>
28 #include <sound/pcm.h>
29 #include <sound/pcm_params.h>
30 #include <sound/initval.h>
31 #include <linux/interrupt.h>
32
33 #include "saa7134.h"
34 #include "saa7134-reg.h"
35
36 static unsigned int debug = 0;
37 module_param(debug, int, 0644);
38 MODULE_PARM_DESC(debug,"enable debug messages [alsa]");
39
40 /*
41 * Configuration macros
42 */
43
44 /* defaults */
45 #define MIXER_ADDR_TVTUNER 0
46 #define MIXER_ADDR_LINE1 1
47 #define MIXER_ADDR_LINE2 2
48 #define MIXER_ADDR_LAST 2
49
50
51 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
52 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
53 static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 1};
54
55 module_param_array(index, int, NULL, 0444);
56 module_param_array(enable, int, NULL, 0444);
57 MODULE_PARM_DESC(index, "Index value for SAA7134 capture interface(s).");
58 MODULE_PARM_DESC(enable, "Enable (or not) the SAA7134 capture interface(s).");
59
60 #define dprintk(fmt, arg...) if (debug) \
61 printk(KERN_DEBUG "%s/alsa: " fmt, dev->name , ##arg)
62
63
64
65 /*
66 * Main chip structure
67 */
68
69 typedef struct snd_card_saa7134 {
70 struct snd_card *card;
71 spinlock_t mixer_lock;
72 int mixer_volume[MIXER_ADDR_LAST+1][2];
73 int capture_source[MIXER_ADDR_LAST+1][2];
74 struct pci_dev *pci;
75 struct saa7134_dev *dev;
76
77 unsigned long iobase;
78 s16 irq;
79 u16 mute_was_on;
80
81 spinlock_t lock;
82 } snd_card_saa7134_t;
83
84
85
86 /*
87 * PCM structure
88 */
89
90 typedef struct snd_card_saa7134_pcm {
91 struct saa7134_dev *dev;
92
93 spinlock_t lock;
94
95 struct snd_pcm_substream *substream;
96 } snd_card_saa7134_pcm_t;
97
98 static struct snd_card *snd_saa7134_cards[SNDRV_CARDS];
99
100
101 /*
102 * saa7134 DMA audio stop
103 *
104 * Called when the capture device is released or the buffer overflows
105 *
106 * - Copied verbatim from saa7134-oss's dsp_dma_stop.
107 *
108 */
109
110 static void saa7134_dma_stop(struct saa7134_dev *dev)
111 {
112 dev->dmasound.dma_blk = -1;
113 dev->dmasound.dma_running = 0;
114 saa7134_set_dmabits(dev);
115 }
116
117 /*
118 * saa7134 DMA audio start
119 *
120 * Called when preparing the capture device for use
121 *
122 * - Copied verbatim from saa7134-oss's dsp_dma_start.
123 *
124 */
125
126 static void saa7134_dma_start(struct saa7134_dev *dev)
127 {
128 dev->dmasound.dma_blk = 0;
129 dev->dmasound.dma_running = 1;
130 saa7134_set_dmabits(dev);
131 }
132
133 /*
134 * saa7134 audio DMA IRQ handler
135 *
136 * Called whenever we get an SAA7134_IRQ_REPORT_DONE_RA3 interrupt
137 * Handles shifting between the 2 buffers, manages the read counters,
138 * and notifies ALSA when periods elapse
139 *
140 * - Mostly copied from saa7134-oss's saa7134_irq_oss_done.
141 *
142 */
143
144 static void saa7134_irq_alsa_done(struct saa7134_dev *dev,
145 unsigned long status)
146 {
147 int next_blk, reg = 0;
148
149 spin_lock(&dev->slock);
150 if (UNSET == dev->dmasound.dma_blk) {
151 dprintk("irq: recording stopped\n");
152 goto done;
153 }
154 if (0 != (status & 0x0f000000))
155 dprintk("irq: lost %ld\n", (status >> 24) & 0x0f);
156 if (0 == (status & 0x10000000)) {
157 /* odd */
158 if (0 == (dev->dmasound.dma_blk & 0x01))
159 reg = SAA7134_RS_BA1(6);
160 } else {
161 /* even */
162 if (1 == (dev->dmasound.dma_blk & 0x01))
163 reg = SAA7134_RS_BA2(6);
164 }
165 if (0 == reg) {
166 dprintk("irq: field oops [%s]\n",
167 (status & 0x10000000) ? "even" : "odd");
168 goto done;
169 }
170
171 if (dev->dmasound.read_count >= dev->dmasound.blksize * (dev->dmasound.blocks-2)) {
172 dprintk("irq: overrun [full=%d/%d] - Blocks in %d\n",dev->dmasound.read_count,
173 dev->dmasound.bufsize, dev->dmasound.blocks);
174 spin_unlock(&dev->slock);
175 snd_pcm_stop(dev->dmasound.substream,SNDRV_PCM_STATE_XRUN);
176 return;
177 }
178
179 /* next block addr */
180 next_blk = (dev->dmasound.dma_blk + 2) % dev->dmasound.blocks;
181 saa_writel(reg,next_blk * dev->dmasound.blksize);
182 if (debug > 2)
183 dprintk("irq: ok, %s, next_blk=%d, addr=%x, blocks=%u, size=%u, read=%u\n",
184 (status & 0x10000000) ? "even" : "odd ", next_blk,
185 next_blk * dev->dmasound.blksize, dev->dmasound.blocks, dev->dmasound.blksize, dev->dmasound.read_count);
186
187 /* update status & wake waiting readers */
188 dev->dmasound.dma_blk = (dev->dmasound.dma_blk + 1) % dev->dmasound.blocks;
189 dev->dmasound.read_count += dev->dmasound.blksize;
190
191 dev->dmasound.recording_on = reg;
192
193 if (dev->dmasound.read_count >= snd_pcm_lib_period_bytes(dev->dmasound.substream)) {
194 spin_unlock(&dev->slock);
195 snd_pcm_period_elapsed(dev->dmasound.substream);
196 spin_lock(&dev->slock);
197 }
198
199 done:
200 spin_unlock(&dev->slock);
201
202 }
203
204 /*
205 * IRQ request handler
206 *
207 * Runs along with saa7134's IRQ handler, discards anything that isn't
208 * DMA sound
209 *
210 */
211
212 static irqreturn_t saa7134_alsa_irq(int irq, void *dev_id)
213 {
214 struct saa7134_dmasound *dmasound = dev_id;
215 struct saa7134_dev *dev = dmasound->priv_data;
216
217 unsigned long report, status;
218 int loop, handled = 0;
219
220 for (loop = 0; loop < 10; loop++) {
221 report = saa_readl(SAA7134_IRQ_REPORT);
222 status = saa_readl(SAA7134_IRQ_STATUS);
223
224 if (report & SAA7134_IRQ_REPORT_DONE_RA3) {
225 handled = 1;
226 saa_writel(SAA7134_IRQ_REPORT,report);
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 = 2,
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 >= 2, 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
548 return 1;
549
550 }
551
552 /*
553 * ALSA hardware release
554 *
555 * - One of the ALSA capture callbacks.
556 *
557 * Called after closing the device, but before snd_card_saa7134_capture_close
558 * It stops the DMA audio and releases the buffers.
559 *
560 */
561
562 static int snd_card_saa7134_hw_free(struct snd_pcm_substream * substream)
563 {
564 snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
565 struct saa7134_dev *dev;
566
567 dev = saa7134->dev;
568
569 if (substream->runtime->dma_area) {
570 saa7134_pgtable_free(dev->pci, &dev->dmasound.pt);
571 videobuf_pci_dma_unmap(dev->pci, &dev->dmasound.dma);
572 dsp_buffer_free(dev);
573 substream->runtime->dma_area = NULL;
574 }
575
576 return 0;
577 }
578
579 /*
580 * ALSA capture finish
581 *
582 * - One of the ALSA capture callbacks.
583 *
584 * Called after closing the device.
585 *
586 */
587
588 static int snd_card_saa7134_capture_close(struct snd_pcm_substream * substream)
589 {
590 snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
591 struct saa7134_dev *dev = saa7134->dev;
592
593 if (saa7134->mute_was_on) {
594 dev->ctl_mute = 1;
595 saa7134_tvaudio_setmute(dev);
596 }
597 return 0;
598 }
599
600 /*
601 * ALSA capture start
602 *
603 * - One of the ALSA capture callbacks.
604 *
605 * Called when opening the device. It creates and populates the PCM
606 * structure
607 *
608 */
609
610 static int snd_card_saa7134_capture_open(struct snd_pcm_substream * substream)
611 {
612 struct snd_pcm_runtime *runtime = substream->runtime;
613 snd_card_saa7134_pcm_t *pcm;
614 snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
615 struct saa7134_dev *dev = saa7134->dev;
616 int amux, err;
617
618 mutex_lock(&dev->dmasound.lock);
619
620 dev->dmasound.read_count = 0;
621 dev->dmasound.read_offset = 0;
622
623 amux = dev->input->amux;
624 if ((amux < 1) || (amux > 3))
625 amux = 1;
626 dev->dmasound.input = amux - 1;
627
628 mutex_unlock(&dev->dmasound.lock);
629
630 pcm = kzalloc(sizeof(*pcm), GFP_KERNEL);
631 if (pcm == NULL)
632 return -ENOMEM;
633
634 pcm->dev=saa7134->dev;
635
636 spin_lock_init(&pcm->lock);
637
638 pcm->substream = substream;
639 runtime->private_data = pcm;
640 runtime->private_free = snd_card_saa7134_runtime_free;
641 runtime->hw = snd_card_saa7134_capture;
642
643 if (dev->ctl_mute != 0) {
644 saa7134->mute_was_on = 1;
645 dev->ctl_mute = 0;
646 saa7134_tvaudio_setmute(dev);
647 }
648
649 if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
650 return err;
651
652 return 0;
653 }
654
655 /*
656 * ALSA capture callbacks definition
657 */
658
659 static struct snd_pcm_ops snd_card_saa7134_capture_ops = {
660 .open = snd_card_saa7134_capture_open,
661 .close = snd_card_saa7134_capture_close,
662 .ioctl = snd_pcm_lib_ioctl,
663 .hw_params = snd_card_saa7134_hw_params,
664 .hw_free = snd_card_saa7134_hw_free,
665 .prepare = snd_card_saa7134_capture_prepare,
666 .trigger = snd_card_saa7134_capture_trigger,
667 .pointer = snd_card_saa7134_capture_pointer,
668 };
669
670 /*
671 * ALSA PCM setup
672 *
673 * Called when initializing the board. Sets up the name and hooks up
674 * the callbacks
675 *
676 */
677
678 static int snd_card_saa7134_pcm(snd_card_saa7134_t *saa7134, int device)
679 {
680 struct snd_pcm *pcm;
681 int err;
682
683 if ((err = snd_pcm_new(saa7134->card, "SAA7134 PCM", device, 0, 1, &pcm)) < 0)
684 return err;
685 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_card_saa7134_capture_ops);
686 pcm->private_data = saa7134;
687 pcm->info_flags = 0;
688 strcpy(pcm->name, "SAA7134 PCM");
689 return 0;
690 }
691
692 #define SAA713x_VOLUME(xname, xindex, addr) \
693 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
694 .info = snd_saa7134_volume_info, \
695 .get = snd_saa7134_volume_get, .put = snd_saa7134_volume_put, \
696 .private_value = addr }
697
698 static int snd_saa7134_volume_info(struct snd_kcontrol * kcontrol,
699 struct snd_ctl_elem_info * uinfo)
700 {
701 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
702 uinfo->count = 2;
703 uinfo->value.integer.min = 0;
704 uinfo->value.integer.max = 20;
705 return 0;
706 }
707
708 static int snd_saa7134_volume_get(struct snd_kcontrol * kcontrol,
709 struct snd_ctl_elem_value * ucontrol)
710 {
711 snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
712 int addr = kcontrol->private_value;
713
714 ucontrol->value.integer.value[0] = chip->mixer_volume[addr][0];
715 ucontrol->value.integer.value[1] = chip->mixer_volume[addr][1];
716 return 0;
717 }
718
719 static int snd_saa7134_volume_put(struct snd_kcontrol * kcontrol,
720 struct snd_ctl_elem_value * ucontrol)
721 {
722 snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
723 struct saa7134_dev *dev = chip->dev;
724
725 int change, addr = kcontrol->private_value;
726 int left, right;
727
728 left = ucontrol->value.integer.value[0];
729 if (left < 0)
730 left = 0;
731 if (left > 20)
732 left = 20;
733 right = ucontrol->value.integer.value[1];
734 if (right < 0)
735 right = 0;
736 if (right > 20)
737 right = 20;
738 spin_lock_irq(&chip->mixer_lock);
739 change = 0;
740 if (chip->mixer_volume[addr][0] != left) {
741 change = 1;
742 right = left;
743 }
744 if (chip->mixer_volume[addr][1] != right) {
745 change = 1;
746 left = right;
747 }
748 if (change) {
749 switch (dev->pci->device) {
750 case PCI_DEVICE_ID_PHILIPS_SAA7134:
751 switch (addr) {
752 case MIXER_ADDR_TVTUNER:
753 left = 20;
754 break;
755 case MIXER_ADDR_LINE1:
756 saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x10,
757 (left > 10) ? 0x00 : 0x10);
758 break;
759 case MIXER_ADDR_LINE2:
760 saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x20,
761 (left > 10) ? 0x00 : 0x20);
762 break;
763 }
764 break;
765 case PCI_DEVICE_ID_PHILIPS_SAA7133:
766 case PCI_DEVICE_ID_PHILIPS_SAA7135:
767 switch (addr) {
768 case MIXER_ADDR_TVTUNER:
769 left = 20;
770 break;
771 case MIXER_ADDR_LINE1:
772 saa_andorb(0x0594, 0x10,
773 (left > 10) ? 0x00 : 0x10);
774 break;
775 case MIXER_ADDR_LINE2:
776 saa_andorb(0x0594, 0x20,
777 (left > 10) ? 0x00 : 0x20);
778 break;
779 }
780 break;
781 }
782 chip->mixer_volume[addr][0] = left;
783 chip->mixer_volume[addr][1] = right;
784 }
785 spin_unlock_irq(&chip->mixer_lock);
786 return change;
787 }
788
789 #define SAA713x_CAPSRC(xname, xindex, addr) \
790 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
791 .info = snd_saa7134_capsrc_info, \
792 .get = snd_saa7134_capsrc_get, .put = snd_saa7134_capsrc_put, \
793 .private_value = addr }
794
795 static int snd_saa7134_capsrc_info(struct snd_kcontrol * kcontrol,
796 struct snd_ctl_elem_info * uinfo)
797 {
798 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
799 uinfo->count = 2;
800 uinfo->value.integer.min = 0;
801 uinfo->value.integer.max = 1;
802 return 0;
803 }
804
805 static int snd_saa7134_capsrc_get(struct snd_kcontrol * kcontrol,
806 struct snd_ctl_elem_value * ucontrol)
807 {
808 snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
809 int addr = kcontrol->private_value;
810
811 spin_lock_irq(&chip->mixer_lock);
812 ucontrol->value.integer.value[0] = chip->capture_source[addr][0];
813 ucontrol->value.integer.value[1] = chip->capture_source[addr][1];
814 spin_unlock_irq(&chip->mixer_lock);
815
816 return 0;
817 }
818
819 static int snd_saa7134_capsrc_put(struct snd_kcontrol * kcontrol,
820 struct snd_ctl_elem_value * ucontrol)
821 {
822 snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
823 int change, addr = kcontrol->private_value;
824 int left, right;
825 u32 anabar, xbarin;
826 int analog_io, rate;
827 struct saa7134_dev *dev;
828
829 dev = chip->dev;
830
831 left = ucontrol->value.integer.value[0] & 1;
832 right = ucontrol->value.integer.value[1] & 1;
833 spin_lock_irq(&chip->mixer_lock);
834
835 change = chip->capture_source[addr][0] != left ||
836 chip->capture_source[addr][1] != right;
837 chip->capture_source[addr][0] = left;
838 chip->capture_source[addr][1] = right;
839 dev->dmasound.input=addr;
840 spin_unlock_irq(&chip->mixer_lock);
841
842
843 if (change) {
844 switch (dev->pci->device) {
845
846 case PCI_DEVICE_ID_PHILIPS_SAA7134:
847 switch (addr) {
848 case MIXER_ADDR_TVTUNER:
849 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0xc0);
850 saa_andorb(SAA7134_SIF_SAMPLE_FREQ, 0x03, 0x00);
851 break;
852 case MIXER_ADDR_LINE1:
853 case MIXER_ADDR_LINE2:
854 analog_io = (MIXER_ADDR_LINE1 == addr) ? 0x00 : 0x08;
855 rate = (32000 == dev->dmasound.rate) ? 0x01 : 0x03;
856 saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x08, analog_io);
857 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0x80);
858 saa_andorb(SAA7134_SIF_SAMPLE_FREQ, 0x03, rate);
859 break;
860 }
861
862 break;
863 case PCI_DEVICE_ID_PHILIPS_SAA7133:
864 case PCI_DEVICE_ID_PHILIPS_SAA7135:
865 xbarin = 0x03; // adc
866 anabar = 0;
867 switch (addr) {
868 case MIXER_ADDR_TVTUNER:
869 xbarin = 0; // Demodulator
870 anabar = 2; // DACs
871 break;
872 case MIXER_ADDR_LINE1:
873 anabar = 0; // aux1, aux1
874 break;
875 case MIXER_ADDR_LINE2:
876 anabar = 9; // aux2, aux2
877 break;
878 }
879
880 /* output xbar always main channel */
881 saa_dsp_writel(dev, SAA7133_DIGITAL_OUTPUT_SEL1, 0xbbbb10);
882
883 if (left || right) { // We've got data, turn the input on
884 saa_dsp_writel(dev, SAA7133_DIGITAL_INPUT_XBAR1, xbarin);
885 saa_writel(SAA7133_ANALOG_IO_SELECT, anabar);
886 } else {
887 saa_dsp_writel(dev, SAA7133_DIGITAL_INPUT_XBAR1, 0);
888 saa_writel(SAA7133_ANALOG_IO_SELECT, 0);
889 }
890 break;
891 }
892 }
893
894 return change;
895 }
896
897 static struct snd_kcontrol_new snd_saa7134_controls[] = {
898 SAA713x_VOLUME("Video Volume", 0, MIXER_ADDR_TVTUNER),
899 SAA713x_CAPSRC("Video Capture Switch", 0, MIXER_ADDR_TVTUNER),
900 SAA713x_VOLUME("Line Volume", 1, MIXER_ADDR_LINE1),
901 SAA713x_CAPSRC("Line Capture Switch", 1, MIXER_ADDR_LINE1),
902 SAA713x_VOLUME("Line Volume", 2, MIXER_ADDR_LINE2),
903 SAA713x_CAPSRC("Line Capture Switch", 2, MIXER_ADDR_LINE2),
904 };
905
906 /*
907 * ALSA mixer setup
908 *
909 * Called when initializing the board. Sets up the name and hooks up
910 * the callbacks
911 *
912 */
913
914 static int snd_card_saa7134_new_mixer(snd_card_saa7134_t * chip)
915 {
916 struct snd_card *card = chip->card;
917 unsigned int idx;
918 int err;
919
920 snd_assert(chip != NULL, return -EINVAL);
921 strcpy(card->mixername, "SAA7134 Mixer");
922
923 for (idx = 0; idx < ARRAY_SIZE(snd_saa7134_controls); idx++) {
924 if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_saa7134_controls[idx], chip))) < 0)
925 return err;
926 }
927 return 0;
928 }
929
930 static void snd_saa7134_free(struct snd_card * card)
931 {
932 snd_card_saa7134_t *chip = card->private_data;
933
934 if (chip->dev->dmasound.priv_data == NULL)
935 return;
936
937 if (chip->irq >= 0) {
938 synchronize_irq(chip->irq);
939 free_irq(chip->irq, &chip->dev->dmasound);
940 }
941
942 chip->dev->dmasound.priv_data = NULL;
943
944 }
945
946 /*
947 * ALSA initialization
948 *
949 * Called by the init routine, once for each saa7134 device present,
950 * it creates the basic structures and registers the ALSA devices
951 *
952 */
953
954 static int alsa_card_saa7134_create(struct saa7134_dev *dev, int devnum)
955 {
956
957 struct snd_card *card;
958 snd_card_saa7134_t *chip;
959 int err;
960
961
962 if (devnum >= SNDRV_CARDS)
963 return -ENODEV;
964 if (!enable[devnum])
965 return -ENODEV;
966
967 card = snd_card_new(index[devnum], id[devnum], THIS_MODULE, sizeof(snd_card_saa7134_t));
968
969 if (card == NULL)
970 return -ENOMEM;
971
972 strcpy(card->driver, "SAA7134");
973
974 /* Card "creation" */
975
976 card->private_free = snd_saa7134_free;
977 chip = (snd_card_saa7134_t *) card->private_data;
978
979 spin_lock_init(&chip->lock);
980 spin_lock_init(&chip->mixer_lock);
981
982 chip->dev = dev;
983
984 chip->card = card;
985
986 chip->pci = dev->pci;
987 chip->iobase = pci_resource_start(dev->pci, 0);
988
989
990 err = request_irq(dev->pci->irq, saa7134_alsa_irq,
991 IRQF_SHARED | IRQF_DISABLED, dev->name,
992 (void*) &dev->dmasound);
993
994 if (err < 0) {
995 printk(KERN_ERR "%s: can't get IRQ %d for ALSA\n",
996 dev->name, dev->pci->irq);
997 goto __nodev;
998 }
999
1000 chip->irq = dev->pci->irq;
1001
1002 mutex_init(&dev->dmasound.lock);
1003
1004 if ((err = snd_card_saa7134_new_mixer(chip)) < 0)
1005 goto __nodev;
1006
1007 if ((err = snd_card_saa7134_pcm(chip, 0)) < 0)
1008 goto __nodev;
1009
1010 snd_card_set_dev(card, &chip->pci->dev);
1011
1012 /* End of "creation" */
1013
1014 strcpy(card->shortname, "SAA7134");
1015 sprintf(card->longname, "%s at 0x%lx irq %d",
1016 chip->dev->name, chip->iobase, chip->irq);
1017
1018 printk(KERN_INFO "%s/alsa: %s registered as card %d\n",dev->name,card->longname,index[devnum]);
1019
1020 if ((err = snd_card_register(card)) == 0) {
1021 snd_saa7134_cards[devnum] = card;
1022 return 0;
1023 }
1024
1025 __nodev:
1026 snd_card_free(card);
1027 return err;
1028 }
1029
1030
1031 static int alsa_device_init(struct saa7134_dev *dev)
1032 {
1033 dev->dmasound.priv_data = dev;
1034 alsa_card_saa7134_create(dev,dev->nr);
1035 return 1;
1036 }
1037
1038 static int alsa_device_exit(struct saa7134_dev *dev)
1039 {
1040
1041 snd_card_free(snd_saa7134_cards[dev->nr]);
1042 snd_saa7134_cards[dev->nr] = NULL;
1043 return 1;
1044 }
1045
1046 /*
1047 * Module initializer
1048 *
1049 * Loops through present saa7134 cards, and assigns an ALSA device
1050 * to each one
1051 *
1052 */
1053
1054 static int saa7134_alsa_init(void)
1055 {
1056 struct saa7134_dev *dev = NULL;
1057 struct list_head *list;
1058
1059 if (!saa7134_dmasound_init && !saa7134_dmasound_exit) {
1060 saa7134_dmasound_init = alsa_device_init;
1061 saa7134_dmasound_exit = alsa_device_exit;
1062 } else {
1063 printk(KERN_WARNING "saa7134 ALSA: can't load, DMA sound handler already assigned (probably to OSS)\n");
1064 return -EBUSY;
1065 }
1066
1067 printk(KERN_INFO "saa7134 ALSA driver for DMA sound loaded\n");
1068
1069 list_for_each(list,&saa7134_devlist) {
1070 dev = list_entry(list, struct saa7134_dev, devlist);
1071 if (dev->dmasound.priv_data == NULL) {
1072 alsa_device_init(dev);
1073 } else {
1074 printk(KERN_ERR "saa7134 ALSA: DMA sound is being handled by OSS. ignoring %s\n",dev->name);
1075 return -EBUSY;
1076 }
1077 }
1078
1079 if (dev == NULL)
1080 printk(KERN_INFO "saa7134 ALSA: no saa7134 cards found\n");
1081
1082 return 0;
1083
1084 }
1085
1086 /*
1087 * Module destructor
1088 */
1089
1090 static void saa7134_alsa_exit(void)
1091 {
1092 int idx;
1093
1094 for (idx = 0; idx < SNDRV_CARDS; idx++) {
1095 snd_card_free(snd_saa7134_cards[idx]);
1096 }
1097
1098 saa7134_dmasound_init = NULL;
1099 saa7134_dmasound_exit = NULL;
1100 printk(KERN_INFO "saa7134 ALSA driver for DMA sound unloaded\n");
1101
1102 return;
1103 }
1104
1105 /* We initialize this late, to make sure the sound system is up and running */
1106 late_initcall(saa7134_alsa_init);
1107 module_exit(saa7134_alsa_exit);
1108 MODULE_LICENSE("GPL");
1109 MODULE_AUTHOR("Ricardo Cerqueira");
1110
1111
1112
WRT350N Kernel Patches