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Revert "[PATCH] paravirt: Add startup infrastructure for paravirtualization"
[pv_ops_mirror.git] / drivers / media / video / saa7134 / saa7134-alsa.c
blobffb0f647a86d6b7b84f873d826a370e19924f75a
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 int irq;
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,report);
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 = 2,
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 >= 2, 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
547 return 1;
548
549 }
550
551 /*
552 * ALSA hardware release
553 *
554 * - One of the ALSA capture callbacks.
555 *
556 * Called after closing the device, but before snd_card_saa7134_capture_close
557 * It stops the DMA audio and releases the buffers.
558 *
559 */
560
561 static int snd_card_saa7134_hw_free(struct snd_pcm_substream * substream)
562 {
563 snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
564 struct saa7134_dev *dev;
565
566 dev = saa7134->dev;
567
568 if (substream->runtime->dma_area) {
569 saa7134_pgtable_free(dev->pci, &dev->dmasound.pt);
570 videobuf_pci_dma_unmap(dev->pci, &dev->dmasound.dma);
571 dsp_buffer_free(dev);
572 substream->runtime->dma_area = NULL;
573 }
574
575 return 0;
576 }
577
578 /*
579 * ALSA capture finish
580 *
581 * - One of the ALSA capture callbacks.
582 *
583 * Called after closing the device.
584 *
585 */
586
587 static int snd_card_saa7134_capture_close(struct snd_pcm_substream * substream)
588 {
589 snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
590 struct saa7134_dev *dev = saa7134->dev;
591
592 dev->ctl_mute = 1;
593 saa7134_tvaudio_setmute(dev);
594 return 0;
595 }
596
597 /*
598 * ALSA capture start
599 *
600 * - One of the ALSA capture callbacks.
601 *
602 * Called when opening the device. It creates and populates the PCM
603 * structure
604 *
605 */
606
607 static int snd_card_saa7134_capture_open(struct snd_pcm_substream * substream)
608 {
609 struct snd_pcm_runtime *runtime = substream->runtime;
610 snd_card_saa7134_pcm_t *pcm;
611 snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
612 struct saa7134_dev *dev = saa7134->dev;
613 int amux, err;
614
615 mutex_lock(&dev->dmasound.lock);
616
617 dev->dmasound.read_count = 0;
618 dev->dmasound.read_offset = 0;
619
620 amux = dev->input->amux;
621 if ((amux < 1) || (amux > 3))
622 amux = 1;
623 dev->dmasound.input = amux - 1;
624
625 mutex_unlock(&dev->dmasound.lock);
626
627 pcm = kzalloc(sizeof(*pcm), GFP_KERNEL);
628 if (pcm == NULL)
629 return -ENOMEM;
630
631 pcm->dev=saa7134->dev;
632
633 spin_lock_init(&pcm->lock);
634
635 pcm->substream = substream;
636 runtime->private_data = pcm;
637 runtime->private_free = snd_card_saa7134_runtime_free;
638 runtime->hw = snd_card_saa7134_capture;
639
640 dev->ctl_mute = 0;
641 saa7134_tvaudio_setmute(dev);
642
643 if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
644 return err;
645
646 return 0;
647 }
648
649 /*
650 * ALSA capture callbacks definition
651 */
652
653 static struct snd_pcm_ops snd_card_saa7134_capture_ops = {
654 .open = snd_card_saa7134_capture_open,
655 .close = snd_card_saa7134_capture_close,
656 .ioctl = snd_pcm_lib_ioctl,
657 .hw_params = snd_card_saa7134_hw_params,
658 .hw_free = snd_card_saa7134_hw_free,
659 .prepare = snd_card_saa7134_capture_prepare,
660 .trigger = snd_card_saa7134_capture_trigger,
661 .pointer = snd_card_saa7134_capture_pointer,
662 };
663
664 /*
665 * ALSA PCM setup
666 *
667 * Called when initializing the board. Sets up the name and hooks up
668 * the callbacks
669 *
670 */
671
672 static int snd_card_saa7134_pcm(snd_card_saa7134_t *saa7134, int device)
673 {
674 struct snd_pcm *pcm;
675 int err;
676
677 if ((err = snd_pcm_new(saa7134->card, "SAA7134 PCM", device, 0, 1, &pcm)) < 0)
678 return err;
679 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_card_saa7134_capture_ops);
680 pcm->private_data = saa7134;
681 pcm->info_flags = 0;
682 strcpy(pcm->name, "SAA7134 PCM");
683 return 0;
684 }
685
686 #define SAA713x_VOLUME(xname, xindex, addr) \
687 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
688 .info = snd_saa7134_volume_info, \
689 .get = snd_saa7134_volume_get, .put = snd_saa7134_volume_put, \
690 .private_value = addr }
691
692 static int snd_saa7134_volume_info(struct snd_kcontrol * kcontrol,
693 struct snd_ctl_elem_info * uinfo)
694 {
695 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
696 uinfo->count = 2;
697 uinfo->value.integer.min = 0;
698 uinfo->value.integer.max = 20;
699 return 0;
700 }
701
702 static int snd_saa7134_volume_get(struct snd_kcontrol * kcontrol,
703 struct snd_ctl_elem_value * ucontrol)
704 {
705 snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
706 int addr = kcontrol->private_value;
707
708 ucontrol->value.integer.value[0] = chip->mixer_volume[addr][0];
709 ucontrol->value.integer.value[1] = chip->mixer_volume[addr][1];
710 return 0;
711 }
712
713 static int snd_saa7134_volume_put(struct snd_kcontrol * kcontrol,
714 struct snd_ctl_elem_value * ucontrol)
715 {
716 snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
717 struct saa7134_dev *dev = chip->dev;
718
719 int change, addr = kcontrol->private_value;
720 int left, right;
721
722 left = ucontrol->value.integer.value[0];
723 if (left < 0)
724 left = 0;
725 if (left > 20)
726 left = 20;
727 right = ucontrol->value.integer.value[1];
728 if (right < 0)
729 right = 0;
730 if (right > 20)
731 right = 20;
732 spin_lock_irq(&chip->mixer_lock);
733 change = 0;
734 if (chip->mixer_volume[addr][0] != left) {
735 change = 1;
736 right = left;
737 }
738 if (chip->mixer_volume[addr][1] != right) {
739 change = 1;
740 left = right;
741 }
742 if (change) {
743 switch (dev->pci->device) {
744 case PCI_DEVICE_ID_PHILIPS_SAA7134:
745 switch (addr) {
746 case MIXER_ADDR_TVTUNER:
747 left = 20;
748 break;
749 case MIXER_ADDR_LINE1:
750 saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x10,
751 (left > 10) ? 0x00 : 0x10);
752 break;
753 case MIXER_ADDR_LINE2:
754 saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x20,
755 (left > 10) ? 0x00 : 0x20);
756 break;
757 }
758 break;
759 case PCI_DEVICE_ID_PHILIPS_SAA7133:
760 case PCI_DEVICE_ID_PHILIPS_SAA7135:
761 switch (addr) {
762 case MIXER_ADDR_TVTUNER:
763 left = 20;
764 break;
765 case MIXER_ADDR_LINE1:
766 saa_andorb(0x0594, 0x10,
767 (left > 10) ? 0x00 : 0x10);
768 break;
769 case MIXER_ADDR_LINE2:
770 saa_andorb(0x0594, 0x20,
771 (left > 10) ? 0x00 : 0x20);
772 break;
773 }
774 break;
775 }
776 chip->mixer_volume[addr][0] = left;
777 chip->mixer_volume[addr][1] = right;
778 }
779 spin_unlock_irq(&chip->mixer_lock);
780 return change;
781 }
782
783 #define SAA713x_CAPSRC(xname, xindex, addr) \
784 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
785 .info = snd_saa7134_capsrc_info, \
786 .get = snd_saa7134_capsrc_get, .put = snd_saa7134_capsrc_put, \
787 .private_value = addr }
788
789 static int snd_saa7134_capsrc_info(struct snd_kcontrol * kcontrol,
790 struct snd_ctl_elem_info * uinfo)
791 {
792 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
793 uinfo->count = 2;
794 uinfo->value.integer.min = 0;
795 uinfo->value.integer.max = 1;
796 return 0;
797 }
798
799 static int snd_saa7134_capsrc_get(struct snd_kcontrol * kcontrol,
800 struct snd_ctl_elem_value * ucontrol)
801 {
802 snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
803 int addr = kcontrol->private_value;
804
805 spin_lock_irq(&chip->mixer_lock);
806 ucontrol->value.integer.value[0] = chip->capture_source[addr][0];
807 ucontrol->value.integer.value[1] = chip->capture_source[addr][1];
808 spin_unlock_irq(&chip->mixer_lock);
809
810 return 0;
811 }
812
813 static int snd_saa7134_capsrc_put(struct snd_kcontrol * kcontrol,
814 struct snd_ctl_elem_value * ucontrol)
815 {
816 snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
817 int change, addr = kcontrol->private_value;
818 int left, right;
819 u32 anabar, xbarin;
820 int analog_io, rate;
821 struct saa7134_dev *dev;
822
823 dev = chip->dev;
824
825 left = ucontrol->value.integer.value[0] & 1;
826 right = ucontrol->value.integer.value[1] & 1;
827 spin_lock_irq(&chip->mixer_lock);
828
829 change = chip->capture_source[addr][0] != left ||
830 chip->capture_source[addr][1] != right;
831 chip->capture_source[addr][0] = left;
832 chip->capture_source[addr][1] = right;
833 dev->dmasound.input=addr;
834 spin_unlock_irq(&chip->mixer_lock);
835
836
837 if (change) {
838 switch (dev->pci->device) {
839
840 case PCI_DEVICE_ID_PHILIPS_SAA7134:
841 switch (addr) {
842 case MIXER_ADDR_TVTUNER:
843 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0xc0);
844 saa_andorb(SAA7134_SIF_SAMPLE_FREQ, 0x03, 0x00);
845 break;
846 case MIXER_ADDR_LINE1:
847 case MIXER_ADDR_LINE2:
848 analog_io = (MIXER_ADDR_LINE1 == addr) ? 0x00 : 0x08;
849 rate = (32000 == dev->dmasound.rate) ? 0x01 : 0x03;
850 saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x08, analog_io);
851 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0x80);
852 saa_andorb(SAA7134_SIF_SAMPLE_FREQ, 0x03, rate);
853 break;
854 }
855
856 break;
857 case PCI_DEVICE_ID_PHILIPS_SAA7133:
858 case PCI_DEVICE_ID_PHILIPS_SAA7135:
859 xbarin = 0x03; // adc
860 anabar = 0;
861 switch (addr) {
862 case MIXER_ADDR_TVTUNER:
863 xbarin = 0; // Demodulator
864 anabar = 2; // DACs
865 break;
866 case MIXER_ADDR_LINE1:
867 anabar = 0; // aux1, aux1
868 break;
869 case MIXER_ADDR_LINE2:
870 anabar = 9; // aux2, aux2
871 break;
872 }
873
874 /* output xbar always main channel */
875 saa_dsp_writel(dev, SAA7133_DIGITAL_OUTPUT_SEL1, 0xbbbb10);
876
877 if (left || right) { // We've got data, turn the input on
878 saa_dsp_writel(dev, SAA7133_DIGITAL_INPUT_XBAR1, xbarin);
879 saa_writel(SAA7133_ANALOG_IO_SELECT, anabar);
880 } else {
881 saa_dsp_writel(dev, SAA7133_DIGITAL_INPUT_XBAR1, 0);
882 saa_writel(SAA7133_ANALOG_IO_SELECT, 0);
883 }
884 break;
885 }
886 }
887
888 return change;
889 }
890
891 static struct snd_kcontrol_new snd_saa7134_controls[] = {
892 SAA713x_VOLUME("Video Volume", 0, MIXER_ADDR_TVTUNER),
893 SAA713x_CAPSRC("Video Capture Switch", 0, MIXER_ADDR_TVTUNER),
894 SAA713x_VOLUME("Line Volume", 1, MIXER_ADDR_LINE1),
895 SAA713x_CAPSRC("Line Capture Switch", 1, MIXER_ADDR_LINE1),
896 SAA713x_VOLUME("Line Volume", 2, MIXER_ADDR_LINE2),
897 SAA713x_CAPSRC("Line Capture Switch", 2, MIXER_ADDR_LINE2),
898 };
899
900 /*
901 * ALSA mixer setup
902 *
903 * Called when initializing the board. Sets up the name and hooks up
904 * the callbacks
905 *
906 */
907
908 static int snd_card_saa7134_new_mixer(snd_card_saa7134_t * chip)
909 {
910 struct snd_card *card = chip->card;
911 unsigned int idx;
912 int err;
913
914 snd_assert(chip != NULL, return -EINVAL);
915 strcpy(card->mixername, "SAA7134 Mixer");
916
917 for (idx = 0; idx < ARRAY_SIZE(snd_saa7134_controls); idx++) {
918 if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_saa7134_controls[idx], chip))) < 0)
919 return err;
920 }
921 return 0;
922 }
923
924 static void snd_saa7134_free(struct snd_card * card)
925 {
926 snd_card_saa7134_t *chip = card->private_data;
927
928 if (chip->dev->dmasound.priv_data == NULL)
929 return;
930
931 if (chip->irq >= 0) {
932 synchronize_irq(chip->irq);
933 free_irq(chip->irq, &chip->dev->dmasound);
934 }
935
936 chip->dev->dmasound.priv_data = NULL;
937
938 }
939
940 /*
941 * ALSA initialization
942 *
943 * Called by the init routine, once for each saa7134 device present,
944 * it creates the basic structures and registers the ALSA devices
945 *
946 */
947
948 static int alsa_card_saa7134_create(struct saa7134_dev *dev, int devnum)
949 {
950
951 struct snd_card *card;
952 snd_card_saa7134_t *chip;
953 int err;
954
955
956 if (devnum >= SNDRV_CARDS)
957 return -ENODEV;
958 if (!enable[devnum])
959 return -ENODEV;
960
961 card = snd_card_new(index[devnum], id[devnum], THIS_MODULE, sizeof(snd_card_saa7134_t));
962
963 if (card == NULL)
964 return -ENOMEM;
965
966 strcpy(card->driver, "SAA7134");
967
968 /* Card "creation" */
969
970 card->private_free = snd_saa7134_free;
971 chip = (snd_card_saa7134_t *) card->private_data;
972
973 spin_lock_init(&chip->lock);
974 spin_lock_init(&chip->mixer_lock);
975
976 chip->dev = dev;
977
978 chip->card = card;
979
980 chip->pci = dev->pci;
981 chip->iobase = pci_resource_start(dev->pci, 0);
982
983
984 err = request_irq(dev->pci->irq, saa7134_alsa_irq,
985 IRQF_SHARED | IRQF_DISABLED, dev->name,
986 (void*) &dev->dmasound);
987
988 if (err < 0) {
989 printk(KERN_ERR "%s: can't get IRQ %d for ALSA\n",
990 dev->name, dev->pci->irq);
991 goto __nodev;
992 }
993
994 chip->irq = dev->pci->irq;
995
996 mutex_init(&dev->dmasound.lock);
997
998 if ((err = snd_card_saa7134_new_mixer(chip)) < 0)
999 goto __nodev;
1000
1001 if ((err = snd_card_saa7134_pcm(chip, 0)) < 0)
1002 goto __nodev;
1003
1004 snd_card_set_dev(card, &chip->pci->dev);
1005
1006 /* End of "creation" */
1007
1008 strcpy(card->shortname, "SAA7134");
1009 sprintf(card->longname, "%s at 0x%lx irq %d",
1010 chip->dev->name, chip->iobase, chip->irq);
1011
1012 printk(KERN_INFO "%s/alsa: %s registered as card %d\n",dev->name,card->longname,index[devnum]);
1013
1014 if ((err = snd_card_register(card)) == 0) {
1015 snd_saa7134_cards[devnum] = card;
1016 return 0;
1017 }
1018
1019 __nodev:
1020 snd_card_free(card);
1021 return err;
1022 }
1023
1024
1025 static int alsa_device_init(struct saa7134_dev *dev)
1026 {
1027 dev->dmasound.priv_data = dev;
1028 alsa_card_saa7134_create(dev,dev->nr);
1029 return 1;
1030 }
1031
1032 static int alsa_device_exit(struct saa7134_dev *dev)
1033 {
1034
1035 snd_card_free(snd_saa7134_cards[dev->nr]);
1036 snd_saa7134_cards[dev->nr] = NULL;
1037 return 1;
1038 }
1039
1040 /*
1041 * Module initializer
1042 *
1043 * Loops through present saa7134 cards, and assigns an ALSA device
1044 * to each one
1045 *
1046 */
1047
1048 static int saa7134_alsa_init(void)
1049 {
1050 struct saa7134_dev *dev = NULL;
1051 struct list_head *list;
1052
1053 if (!saa7134_dmasound_init && !saa7134_dmasound_exit) {
1054 saa7134_dmasound_init = alsa_device_init;
1055 saa7134_dmasound_exit = alsa_device_exit;
1056 } else {
1057 printk(KERN_WARNING "saa7134 ALSA: can't load, DMA sound handler already assigned (probably to OSS)\n");
1058 return -EBUSY;
1059 }
1060
1061 printk(KERN_INFO "saa7134 ALSA driver for DMA sound loaded\n");
1062
1063 list_for_each(list,&saa7134_devlist) {
1064 dev = list_entry(list, struct saa7134_dev, devlist);
1065 if (dev->dmasound.priv_data == NULL) {
1066 alsa_device_init(dev);
1067 } else {
1068 printk(KERN_ERR "saa7134 ALSA: DMA sound is being handled by OSS. ignoring %s\n",dev->name);
1069 return -EBUSY;
1070 }
1071 }
1072
1073 if (dev == NULL)
1074 printk(KERN_INFO "saa7134 ALSA: no saa7134 cards found\n");
1075
1076 return 0;
1077
1078 }
1079
1080 /*
1081 * Module destructor
1082 */
1083
1084 static void saa7134_alsa_exit(void)
1085 {
1086 int idx;
1087
1088 for (idx = 0; idx < SNDRV_CARDS; idx++) {
1089 snd_card_free(snd_saa7134_cards[idx]);
1090 }
1091
1092 saa7134_dmasound_init = NULL;
1093 saa7134_dmasound_exit = NULL;
1094 printk(KERN_INFO "saa7134 ALSA driver for DMA sound unloaded\n");
1095
1096 return;
1097 }
1098
1099 /* We initialize this late, to make sure the sound system is up and running */
1100 late_initcall(saa7134_alsa_init);
1101 module_exit(saa7134_alsa_exit);
1102 MODULE_LICENSE("GPL");
1103 MODULE_AUTHOR("Ricardo Cerqueira");
1104
1105
1106
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