V4L/DVB (3123b): syncs V4L subsystem tree with kernel
[linux-2.6.git] / drivers / media / video / saa7134 / saa7134-alsa.c
1 /*
2  *   SAA713x ALSA support for V4L
3  *
4  *
5  *   Caveats:
6  *        - Volume doesn't work (it's always at max)
7  *
8  *   This program is free software; you can redistribute it and/or modify
9  *   it under the terms of the GNU General Public License as published by
10  *   the Free Software Foundation, version 2
11  *
12  *   This program is distributed in the hope that it will be useful,
13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  *   GNU General Public License for more details.
16  *
17  *   You should have received a copy of the GNU General Public License
18  *   along with this program; if not, write to the Free Software
19  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
20  *
21  */
22
23 #include <linux/init.h>
24 #include <linux/slab.h>
25 #include <linux/time.h>
26 #include <linux/wait.h>
27 #include <linux/moduleparam.h>
28 #include <linux/module.h>
29 #include <sound/driver.h>
30 #include <sound/core.h>
31 #include <sound/control.h>
32 #include <sound/pcm.h>
33 #include <sound/pcm_params.h>
34 #include <sound/initval.h>
35 #include <linux/interrupt.h>
36
37 #include "saa7134.h"
38 #include "saa7134-reg.h"
39
40 static unsigned int debug  = 0;
41 module_param(debug, int, 0644);
42 MODULE_PARM_DESC(debug,"enable debug messages [alsa]");
43
44 /*
45  * Configuration macros
46  */
47
48 /* defaults */
49 #define MIXER_ADDR_TVTUNER      0
50 #define MIXER_ADDR_LINE1        1
51 #define MIXER_ADDR_LINE2        2
52 #define MIXER_ADDR_LAST         2
53
54
55 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
56 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
57 static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 0};
58
59 module_param_array(index, int, NULL, 0444);
60 MODULE_PARM_DESC(index, "Index value for SAA7134 capture interface(s).");
61
62 #define dprintk(fmt, arg...)    if (debug) \
63         printk(KERN_DEBUG "%s/alsa: " fmt, dev->name , ##arg)
64
65
66
67 /*
68  * Main chip structure
69  */
70
71 typedef struct snd_card_saa7134 {
72         snd_card_t *card;
73         spinlock_t mixer_lock;
74         int mixer_volume[MIXER_ADDR_LAST+1][2];
75         int capture_source[MIXER_ADDR_LAST+1][2];
76         struct pci_dev *pci;
77         struct saa7134_dev *dev;
78
79         unsigned long iobase;
80         int irq;
81
82         spinlock_t lock;
83 } snd_card_saa7134_t;
84
85
86
87 /*
88  * PCM structure
89  */
90
91 typedef struct snd_card_saa7134_pcm {
92         struct saa7134_dev *dev;
93
94         spinlock_t lock;
95
96         snd_pcm_substream_t *substream;
97 } snd_card_saa7134_pcm_t;
98
99 static snd_card_t *snd_saa7134_cards[SNDRV_CARDS];
100
101
102 /*
103  * saa7134 DMA audio stop
104  *
105  *   Called when the capture device is released or the buffer overflows
106  *
107  *   - Copied verbatim from saa7134-oss's dsp_dma_stop.
108  *
109  */
110
111 static void saa7134_dma_stop(struct saa7134_dev *dev)
112 {
113         dev->dmasound.dma_blk     = -1;
114         dev->dmasound.dma_running = 0;
115         saa7134_set_dmabits(dev);
116 }
117
118 /*
119  * saa7134 DMA audio start
120  *
121  *   Called when preparing the capture device for use
122  *
123  *   - Copied verbatim from saa7134-oss's dsp_dma_start.
124  *
125  */
126
127 static void saa7134_dma_start(struct saa7134_dev *dev)
128 {
129         dev->dmasound.dma_blk     = 0;
130         dev->dmasound.dma_running = 1;
131         saa7134_set_dmabits(dev);
132 }
133
134 /*
135  * saa7134 audio DMA IRQ handler
136  *
137  *   Called whenever we get an SAA7134_IRQ_REPORT_DONE_RA3 interrupt
138  *   Handles shifting between the 2 buffers, manages the read counters,
139  *  and notifies ALSA when periods elapse
140  *
141  *   - Mostly copied from saa7134-oss's saa7134_irq_oss_done.
142  *
143  */
144
145 static void saa7134_irq_alsa_done(struct saa7134_dev *dev,
146                                   unsigned long status)
147 {
148         int next_blk, reg = 0;
149
150         spin_lock(&dev->slock);
151         if (UNSET == dev->dmasound.dma_blk) {
152                 dprintk("irq: recording stopped\n");
153                 goto done;
154         }
155         if (0 != (status & 0x0f000000))
156                 dprintk("irq: lost %ld\n", (status >> 24) & 0x0f);
157         if (0 == (status & 0x10000000)) {
158                 /* odd */
159                 if (0 == (dev->dmasound.dma_blk & 0x01))
160                         reg = SAA7134_RS_BA1(6);
161         } else {
162                 /* even */
163                 if (1 == (dev->dmasound.dma_blk & 0x01))
164                         reg = SAA7134_RS_BA2(6);
165         }
166         if (0 == reg) {
167                 dprintk("irq: field oops [%s]\n",
168                         (status & 0x10000000) ? "even" : "odd");
169                 goto done;
170         }
171
172         if (dev->dmasound.read_count >= dev->dmasound.blksize * (dev->dmasound.blocks-2)) {
173                 dprintk("irq: overrun [full=%d/%d] - Blocks in %d\n",dev->dmasound.read_count,
174                         dev->dmasound.bufsize, dev->dmasound.blocks);
175                 spin_unlock(&dev->slock);
176                 snd_pcm_stop(dev->dmasound.substream,SNDRV_PCM_STATE_XRUN);
177                 return;
178         }
179
180         /* next block addr */
181         next_blk = (dev->dmasound.dma_blk + 2) % dev->dmasound.blocks;
182         saa_writel(reg,next_blk * dev->dmasound.blksize);
183         if (debug > 2)
184                 dprintk("irq: ok, %s, next_blk=%d, addr=%x, blocks=%u, size=%u, read=%u\n",
185                         (status & 0x10000000) ? "even" : "odd ", next_blk,
186                         next_blk * dev->dmasound.blksize, dev->dmasound.blocks, dev->dmasound.blksize, dev->dmasound.read_count);
187
188         /* update status & wake waiting readers */
189         dev->dmasound.dma_blk = (dev->dmasound.dma_blk + 1) % dev->dmasound.blocks;
190         dev->dmasound.read_count += dev->dmasound.blksize;
191
192         dev->dmasound.recording_on = reg;
193
194         if (dev->dmasound.read_count >= snd_pcm_lib_period_bytes(dev->dmasound.substream)) {
195                 spin_unlock(&dev->slock);
196                 snd_pcm_period_elapsed(dev->dmasound.substream);
197                 spin_lock(&dev->slock);
198         }
199
200  done:
201         spin_unlock(&dev->slock);
202
203 }
204
205 /*
206  * IRQ request handler
207  *
208  *   Runs along with saa7134's IRQ handler, discards anything that isn't
209  *   DMA sound
210  *
211  */
212
213 static irqreturn_t saa7134_alsa_irq(int irq, void *dev_id, struct pt_regs *regs)
214 {
215         struct saa7134_dmasound *dmasound = dev_id;
216         struct saa7134_dev *dev = dmasound->priv_data;
217
218         unsigned long report, status;
219         int loop, handled = 0;
220
221         for (loop = 0; loop < 10; loop++) {
222                 report = saa_readl(SAA7134_IRQ_REPORT);
223                 status = saa_readl(SAA7134_IRQ_STATUS);
224
225                 if (report & SAA7134_IRQ_REPORT_DONE_RA3) {
226                         handled = 1;
227                         saa_writel(SAA7134_IRQ_REPORT,report);
228                         saa7134_irq_alsa_done(dev, status);
229                 } else {
230                         goto out;
231                 }
232         }
233
234         if (loop == 10) {
235                 dprintk("error! looping IRQ!");
236         }
237
238 out:
239         return IRQ_RETVAL(handled);
240 }
241
242 /*
243  * ALSA capture trigger
244  *
245  *   - One of the ALSA capture callbacks.
246  *
247  *   Called whenever a capture is started or stopped. Must be defined,
248  *   but there's nothing we want to do here
249  *
250  */
251
252 static int snd_card_saa7134_capture_trigger(snd_pcm_substream_t * substream,
253                                           int cmd)
254 {
255         snd_pcm_runtime_t *runtime = substream->runtime;
256         snd_card_saa7134_pcm_t *pcm = runtime->private_data;
257         struct saa7134_dev *dev=pcm->dev;
258         int err = 0;
259
260         spin_lock(&dev->slock);
261         if (cmd == SNDRV_PCM_TRIGGER_START) {
262                 /* start dma */
263                 saa7134_dma_start(dev);
264         } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
265                 /* stop dma */
266                 saa7134_dma_stop(dev);
267         } else {
268                 err = -EINVAL;
269         }
270         spin_unlock(&dev->slock);
271
272         return err;
273 }
274
275 /*
276  * DMA buffer initialization
277  *
278  *   Uses V4L functions to initialize the DMA. Shouldn't be necessary in
279  *  ALSA, but I was unable to use ALSA's own DMA, and had to force the
280  *  usage of V4L's
281  *
282  *   - Copied verbatim from saa7134-oss.
283  *
284  */
285
286 static int dsp_buffer_init(struct saa7134_dev *dev)
287 {
288         int err;
289
290         BUG_ON(!dev->dmasound.bufsize);
291
292         videobuf_dma_init(&dev->dmasound.dma);
293         err = videobuf_dma_init_kernel(&dev->dmasound.dma, PCI_DMA_FROMDEVICE,
294                                        (dev->dmasound.bufsize + PAGE_SIZE) >> PAGE_SHIFT);
295         if (0 != err)
296                 return err;
297         return 0;
298 }
299
300 /*
301  * DMA buffer release
302  *
303  *   Called after closing the device, during snd_card_saa7134_capture_close
304  *
305  */
306
307 static int dsp_buffer_free(struct saa7134_dev *dev)
308 {
309         if (!dev->dmasound.blksize)
310                 BUG();
311
312         videobuf_dma_free(&dev->dmasound.dma);
313
314         dev->dmasound.blocks  = 0;
315         dev->dmasound.blksize = 0;
316         dev->dmasound.bufsize = 0;
317
318        return 0;
319 }
320
321
322 /*
323  * ALSA PCM preparation
324  *
325  *   - One of the ALSA capture callbacks.
326  *
327  *   Called right after the capture device is opened, this function configures
328  *  the buffer using the previously defined functions, allocates the memory,
329  *  sets up the hardware registers, and then starts the DMA. When this function
330  *  returns, the audio should be flowing.
331  *
332  */
333
334 static int snd_card_saa7134_capture_prepare(snd_pcm_substream_t * substream)
335 {
336         snd_pcm_runtime_t *runtime = substream->runtime;
337         int bswap, sign;
338         u32 fmt, control;
339         snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
340         struct saa7134_dev *dev;
341         snd_card_saa7134_pcm_t *pcm = runtime->private_data;
342
343         pcm->dev->dmasound.substream = substream;
344
345         dev = saa7134->dev;
346
347         if (snd_pcm_format_width(runtime->format) == 8)
348                 fmt = 0x00;
349         else
350                 fmt = 0x01;
351
352         if (snd_pcm_format_signed(runtime->format))
353                 sign = 1;
354         else
355                 sign = 0;
356
357         if (snd_pcm_format_big_endian(runtime->format))
358                 bswap = 1;
359         else
360                 bswap = 0;
361
362         switch (dev->pci->device) {
363           case PCI_DEVICE_ID_PHILIPS_SAA7134:
364                 if (1 == runtime->channels)
365                         fmt |= (1 << 3);
366                 if (2 == runtime->channels)
367                         fmt |= (3 << 3);
368                 if (sign)
369                         fmt |= 0x04;
370
371                 fmt |= (MIXER_ADDR_TVTUNER == dev->dmasound.input) ? 0xc0 : 0x80;
372                 saa_writeb(SAA7134_NUM_SAMPLES0, ((dev->dmasound.blksize - 1) & 0x0000ff));
373                 saa_writeb(SAA7134_NUM_SAMPLES1, ((dev->dmasound.blksize - 1) & 0x00ff00) >>  8);
374                 saa_writeb(SAA7134_NUM_SAMPLES2, ((dev->dmasound.blksize - 1) & 0xff0000) >> 16);
375                 saa_writeb(SAA7134_AUDIO_FORMAT_CTRL, fmt);
376
377                 break;
378           case PCI_DEVICE_ID_PHILIPS_SAA7133:
379           case PCI_DEVICE_ID_PHILIPS_SAA7135:
380                 if (1 == runtime->channels)
381                         fmt |= (1 << 4);
382                 if (2 == runtime->channels)
383                         fmt |= (2 << 4);
384                 if (!sign)
385                         fmt |= 0x04;
386                 saa_writel(SAA7133_NUM_SAMPLES, dev->dmasound.blksize -1);
387                 saa_writel(SAA7133_AUDIO_CHANNEL, 0x543210 | (fmt << 24));
388                 break;
389         }
390
391         dprintk("rec_start: afmt=%d ch=%d  =>  fmt=0x%x swap=%c\n",
392                 runtime->format, runtime->channels, fmt,
393                 bswap ? 'b' : '-');
394         /* dma: setup channel 6 (= AUDIO) */
395         control = SAA7134_RS_CONTROL_BURST_16 |
396                 SAA7134_RS_CONTROL_ME |
397                 (dev->dmasound.pt.dma >> 12);
398         if (bswap)
399                 control |= SAA7134_RS_CONTROL_BSWAP;
400
401         saa_writel(SAA7134_RS_BA1(6),0);
402         saa_writel(SAA7134_RS_BA2(6),dev->dmasound.blksize);
403         saa_writel(SAA7134_RS_PITCH(6),0);
404         saa_writel(SAA7134_RS_CONTROL(6),control);
405
406         dev->dmasound.rate = runtime->rate;
407
408         return 0;
409
410 }
411
412 /*
413  * ALSA pointer fetching
414  *
415  *   - One of the ALSA capture callbacks.
416  *
417  *   Called whenever a period elapses, it must return the current hardware
418  *  position of the buffer.
419  *   Also resets the read counter used to prevent overruns
420  *
421  */
422
423 static snd_pcm_uframes_t snd_card_saa7134_capture_pointer(snd_pcm_substream_t * substream)
424 {
425         snd_pcm_runtime_t *runtime = substream->runtime;
426         snd_card_saa7134_pcm_t *pcm = runtime->private_data;
427         struct saa7134_dev *dev=pcm->dev;
428
429         if (dev->dmasound.read_count) {
430                 dev->dmasound.read_count  -= snd_pcm_lib_period_bytes(substream);
431                 dev->dmasound.read_offset += snd_pcm_lib_period_bytes(substream);
432                 if (dev->dmasound.read_offset == dev->dmasound.bufsize)
433                         dev->dmasound.read_offset = 0;
434         }
435
436         return bytes_to_frames(runtime, dev->dmasound.read_offset);
437 }
438
439 /*
440  * ALSA hardware capabilities definition
441  */
442
443 static snd_pcm_hardware_t snd_card_saa7134_capture =
444 {
445         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
446                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
447                                  SNDRV_PCM_INFO_MMAP_VALID),
448         .formats =              SNDRV_PCM_FMTBIT_S16_LE | \
449                                 SNDRV_PCM_FMTBIT_S16_BE | \
450                                 SNDRV_PCM_FMTBIT_S8 | \
451                                 SNDRV_PCM_FMTBIT_U8 | \
452                                 SNDRV_PCM_FMTBIT_U16_LE | \
453                                 SNDRV_PCM_FMTBIT_U16_BE,
454         .rates =                SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_48000,
455         .rate_min =             32000,
456         .rate_max =             48000,
457         .channels_min =         1,
458         .channels_max =         2,
459         .buffer_bytes_max =     (256*1024),
460         .period_bytes_min =     64,
461         .period_bytes_max =     (256*1024),
462         .periods_min =          2,
463         .periods_max =          1024,
464 };
465
466 static void snd_card_saa7134_runtime_free(snd_pcm_runtime_t *runtime)
467 {
468         snd_card_saa7134_pcm_t *pcm = runtime->private_data;
469
470         kfree(pcm);
471 }
472
473
474 /*
475  * ALSA hardware params
476  *
477  *   - One of the ALSA capture callbacks.
478  *
479  *   Called on initialization, right before the PCM preparation
480  *
481  */
482
483 static int snd_card_saa7134_hw_params(snd_pcm_substream_t * substream,
484                                     snd_pcm_hw_params_t * hw_params)
485 {
486         snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
487         struct saa7134_dev *dev;
488         unsigned int period_size, periods;
489         int err;
490
491         period_size = params_period_bytes(hw_params);
492         periods = params_periods(hw_params);
493
494         snd_assert(period_size >= 0x100 && period_size <= 0x10000,
495                    return -EINVAL);
496         snd_assert(periods >= 2, return -EINVAL);
497         snd_assert(period_size * periods <= 1024 * 1024, return -EINVAL);
498
499         dev = saa7134->dev;
500
501         if (dev->dmasound.blocks == periods &&
502             dev->dmasound.blksize == period_size)
503                 return 0;
504
505         /* release the old buffer */
506         if (substream->runtime->dma_area) {
507                 saa7134_pgtable_free(dev->pci, &dev->dmasound.pt);
508                 videobuf_dma_pci_unmap(dev->pci, &dev->dmasound.dma);
509                 dsp_buffer_free(dev);
510                 substream->runtime->dma_area = NULL;
511         }
512         dev->dmasound.blocks  = periods;
513         dev->dmasound.blksize = period_size;
514         dev->dmasound.bufsize = period_size * periods;
515
516         err = dsp_buffer_init(dev);
517         if (0 != err) {
518                 dev->dmasound.blocks  = 0;
519                 dev->dmasound.blksize = 0;
520                 dev->dmasound.bufsize = 0;
521                 return err;
522         }
523
524         if (0 != (err = videobuf_dma_pci_map(dev->pci, &dev->dmasound.dma))) {
525                 dsp_buffer_free(dev);
526                 return err;
527         }
528         if (0 != (err = saa7134_pgtable_alloc(dev->pci,&dev->dmasound.pt))) {
529                 videobuf_dma_pci_unmap(dev->pci, &dev->dmasound.dma);
530                 dsp_buffer_free(dev);
531                 return err;
532         }
533         if (0 != (err = saa7134_pgtable_build(dev->pci,&dev->dmasound.pt,
534                                                 dev->dmasound.dma.sglist,
535                                                 dev->dmasound.dma.sglen,
536                                                 0))) {
537                 saa7134_pgtable_free(dev->pci, &dev->dmasound.pt);
538                 videobuf_dma_pci_unmap(dev->pci, &dev->dmasound.dma);
539                 dsp_buffer_free(dev);
540                 return err;
541         }
542
543         /* I should be able to use runtime->dma_addr in the control
544            byte, but it doesn't work. So I allocate the DMA using the
545            V4L functions, and force ALSA to use that as the DMA area */
546
547         substream->runtime->dma_area = dev->dmasound.dma.vmalloc;
548
549         return 1;
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(snd_pcm_substream_t * 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_dma_pci_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(snd_pcm_substream_t * substream)
590 {
591         return 0;
592 }
593
594 /*
595  * ALSA capture start
596  *
597  *   - One of the ALSA capture callbacks.
598  *
599  *   Called when opening the device. It creates and populates the PCM
600  *  structure
601  *
602  */
603
604 static int snd_card_saa7134_capture_open(snd_pcm_substream_t * substream)
605 {
606         snd_pcm_runtime_t *runtime = substream->runtime;
607         snd_card_saa7134_pcm_t *pcm;
608         snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
609         struct saa7134_dev *dev = saa7134->dev;
610         int err;
611
612         down(&dev->dmasound.lock);
613
614         dev->dmasound.read_count  = 0;
615         dev->dmasound.read_offset = 0;
616
617         up(&dev->dmasound.lock);
618
619         pcm = kzalloc(sizeof(*pcm), GFP_KERNEL);
620         if (pcm == NULL)
621                 return -ENOMEM;
622
623         pcm->dev=saa7134->dev;
624
625         spin_lock_init(&pcm->lock);
626
627         pcm->substream = substream;
628         runtime->private_data = pcm;
629         runtime->private_free = snd_card_saa7134_runtime_free;
630         runtime->hw = snd_card_saa7134_capture;
631
632         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
633                 return err;
634
635         return 0;
636 }
637
638 /*
639  * ALSA capture callbacks definition
640  */
641
642 static snd_pcm_ops_t snd_card_saa7134_capture_ops = {
643         .open =                 snd_card_saa7134_capture_open,
644         .close =                snd_card_saa7134_capture_close,
645         .ioctl =                snd_pcm_lib_ioctl,
646         .hw_params =            snd_card_saa7134_hw_params,
647         .hw_free =              snd_card_saa7134_hw_free,
648         .prepare =              snd_card_saa7134_capture_prepare,
649         .trigger =              snd_card_saa7134_capture_trigger,
650         .pointer =              snd_card_saa7134_capture_pointer,
651 };
652
653 /*
654  * ALSA PCM setup
655  *
656  *   Called when initializing the board. Sets up the name and hooks up
657  *  the callbacks
658  *
659  */
660
661 static int snd_card_saa7134_pcm(snd_card_saa7134_t *saa7134, int device)
662 {
663         snd_pcm_t *pcm;
664         int err;
665
666         if ((err = snd_pcm_new(saa7134->card, "SAA7134 PCM", device, 0, 1, &pcm)) < 0)
667                 return err;
668         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_card_saa7134_capture_ops);
669         pcm->private_data = saa7134;
670         pcm->info_flags = 0;
671         strcpy(pcm->name, "SAA7134 PCM");
672         return 0;
673 }
674
675 #define SAA713x_VOLUME(xname, xindex, addr) \
676 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
677   .info = snd_saa7134_volume_info, \
678   .get = snd_saa7134_volume_get, .put = snd_saa7134_volume_put, \
679   .private_value = addr }
680
681 static int snd_saa7134_volume_info(snd_kcontrol_t * kcontrol, snd_ctl_elem_info_t * uinfo)
682 {
683         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
684         uinfo->count = 2;
685         uinfo->value.integer.min = 0;
686         uinfo->value.integer.max = 20;
687         return 0;
688 }
689
690 static int snd_saa7134_volume_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
691 {
692         snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
693         int addr = kcontrol->private_value;
694
695         ucontrol->value.integer.value[0] = chip->mixer_volume[addr][0];
696         ucontrol->value.integer.value[1] = chip->mixer_volume[addr][1];
697         return 0;
698 }
699
700 static int snd_saa7134_volume_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
701 {
702         snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
703         int change, addr = kcontrol->private_value;
704         int left, right;
705
706         left = ucontrol->value.integer.value[0];
707         if (left < 0)
708                 left = 0;
709         if (left > 20)
710                 left = 20;
711         right = ucontrol->value.integer.value[1];
712         if (right < 0)
713                 right = 0;
714         if (right > 20)
715                 right = 20;
716         spin_lock_irq(&chip->mixer_lock);
717         change = chip->mixer_volume[addr][0] != left ||
718                  chip->mixer_volume[addr][1] != right;
719         chip->mixer_volume[addr][0] = left;
720         chip->mixer_volume[addr][1] = right;
721         spin_unlock_irq(&chip->mixer_lock);
722         return change;
723 }
724
725 #define SAA713x_CAPSRC(xname, xindex, addr) \
726 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
727   .info = snd_saa7134_capsrc_info, \
728   .get = snd_saa7134_capsrc_get, .put = snd_saa7134_capsrc_put, \
729   .private_value = addr }
730
731 static int snd_saa7134_capsrc_info(snd_kcontrol_t * kcontrol, snd_ctl_elem_info_t * uinfo)
732 {
733         uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
734         uinfo->count = 2;
735         uinfo->value.integer.min = 0;
736         uinfo->value.integer.max = 1;
737         return 0;
738 }
739
740 static int snd_saa7134_capsrc_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
741 {
742         snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
743         int addr = kcontrol->private_value;
744
745         spin_lock_irq(&chip->mixer_lock);
746         ucontrol->value.integer.value[0] = chip->capture_source[addr][0];
747         ucontrol->value.integer.value[1] = chip->capture_source[addr][1];
748         spin_unlock_irq(&chip->mixer_lock);
749
750         return 0;
751 }
752
753 static int snd_saa7134_capsrc_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
754 {
755         snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
756         int change, addr = kcontrol->private_value;
757         int left, right;
758         u32 anabar, xbarin;
759         int analog_io, rate;
760         struct saa7134_dev *dev;
761
762         dev = chip->dev;
763
764         left = ucontrol->value.integer.value[0] & 1;
765         right = ucontrol->value.integer.value[1] & 1;
766         spin_lock_irq(&chip->mixer_lock);
767
768         change = chip->capture_source[addr][0] != left ||
769                  chip->capture_source[addr][1] != right;
770         chip->capture_source[addr][0] = left;
771         chip->capture_source[addr][1] = right;
772         dev->dmasound.input=addr;
773         spin_unlock_irq(&chip->mixer_lock);
774
775
776         if (change) {
777           switch (dev->pci->device) {
778
779            case PCI_DEVICE_ID_PHILIPS_SAA7134:
780                 switch (addr) {
781                         case MIXER_ADDR_TVTUNER:
782                                 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0xc0);
783                                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, 0x00);
784                                 break;
785                         case MIXER_ADDR_LINE1:
786                         case MIXER_ADDR_LINE2:
787                                 analog_io = (MIXER_ADDR_LINE1 == addr) ? 0x00 : 0x08;
788                                 rate = (32000 == dev->dmasound.rate) ? 0x01 : 0x03;
789                                 saa_andorb(SAA7134_ANALOG_IO_SELECT,  0x08, analog_io);
790                                 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0x80);
791                                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, rate);
792                                 break;
793                 }
794
795                 break;
796            case PCI_DEVICE_ID_PHILIPS_SAA7133:
797            case PCI_DEVICE_ID_PHILIPS_SAA7135:
798                 xbarin = 0x03; // adc
799                 anabar = 0;
800                 switch (addr) {
801                         case MIXER_ADDR_TVTUNER:
802                                 xbarin = 0; // Demodulator
803                                 anabar = 2; // DACs
804                                 break;
805                         case MIXER_ADDR_LINE1:
806                                 anabar = 0;  // aux1, aux1
807                                 break;
808                         case MIXER_ADDR_LINE2:
809                                 anabar = 9;  // aux2, aux2
810                                 break;
811                 }
812
813                 /* output xbar always main channel */
814                 saa_dsp_writel(dev, SAA7133_DIGITAL_OUTPUT_SEL1, 0xbbbb10);
815
816                 if (left || right) { // We've got data, turn the input on
817                   saa_dsp_writel(dev, SAA7133_DIGITAL_INPUT_XBAR1, xbarin);
818                   saa_writel(SAA7133_ANALOG_IO_SELECT, anabar);
819                 } else {
820                   saa_dsp_writel(dev, SAA7133_DIGITAL_INPUT_XBAR1, 0);
821                   saa_writel(SAA7133_ANALOG_IO_SELECT, 0);
822                 }
823                 break;
824           }
825         }
826
827         return change;
828 }
829
830 static snd_kcontrol_new_t snd_saa7134_controls[] = {
831 SAA713x_VOLUME("Video Volume", 0, MIXER_ADDR_TVTUNER),
832 SAA713x_CAPSRC("Video Capture Switch", 0, MIXER_ADDR_TVTUNER),
833 SAA713x_VOLUME("Line Volume", 1, MIXER_ADDR_LINE1),
834 SAA713x_CAPSRC("Line Capture Switch", 1, MIXER_ADDR_LINE1),
835 SAA713x_VOLUME("Line Volume", 2, MIXER_ADDR_LINE2),
836 SAA713x_CAPSRC("Line Capture Switch", 2, MIXER_ADDR_LINE2),
837 };
838
839 /*
840  * ALSA mixer setup
841  *
842  *   Called when initializing the board. Sets up the name and hooks up
843  *  the callbacks
844  *
845  */
846
847 static int snd_card_saa7134_new_mixer(snd_card_saa7134_t * chip)
848 {
849         snd_card_t *card = chip->card;
850         unsigned int idx;
851         int err;
852
853         snd_assert(chip != NULL, return -EINVAL);
854         strcpy(card->mixername, "SAA7134 Mixer");
855
856         for (idx = 0; idx < ARRAY_SIZE(snd_saa7134_controls); idx++) {
857                 if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_saa7134_controls[idx], chip))) < 0)
858                         return err;
859         }
860         return 0;
861 }
862
863 static void snd_saa7134_free(snd_card_t * card)
864 {
865         snd_card_saa7134_t *chip = card->private_data;
866
867         if (chip->dev->dmasound.priv_data == NULL)
868                 return;
869
870         if (chip->irq >= 0) {
871                 synchronize_irq(chip->irq);
872                 free_irq(chip->irq, &chip->dev->dmasound);
873         }
874
875         chip->dev->dmasound.priv_data = NULL;
876
877 }
878
879 /*
880  * ALSA initialization
881  *
882  *   Called by the init routine, once for each saa7134 device present,
883  *  it creates the basic structures and registers the ALSA devices
884  *
885  */
886
887 static int alsa_card_saa7134_create(struct saa7134_dev *dev, int devnum)
888 {
889
890         snd_card_t *card;
891         snd_card_saa7134_t *chip;
892         int err;
893
894
895         if (devnum >= SNDRV_CARDS)
896                 return -ENODEV;
897         if (!enable[devnum])
898                 return -ENODEV;
899
900         card = snd_card_new(index[devnum], id[devnum], THIS_MODULE, sizeof(snd_card_saa7134_t));
901
902         if (card == NULL)
903                 return -ENOMEM;
904
905         strcpy(card->driver, "SAA7134");
906
907         /* Card "creation" */
908
909         card->private_free = snd_saa7134_free;
910         chip = (snd_card_saa7134_t *) card->private_data;
911
912         spin_lock_init(&chip->lock);
913         spin_lock_init(&chip->mixer_lock);
914
915         chip->dev = dev;
916
917         chip->card = card;
918
919         chip->pci = dev->pci;
920         chip->iobase = pci_resource_start(dev->pci, 0);
921
922
923         err = request_irq(dev->pci->irq, saa7134_alsa_irq,
924                                 SA_SHIRQ | SA_INTERRUPT, dev->name,
925                                 (void*) &dev->dmasound);
926
927         if (err < 0) {
928                 printk(KERN_ERR "%s: can't get IRQ %d for ALSA\n",
929                         dev->name, dev->pci->irq);
930                 goto __nodev;
931         }
932
933         chip->irq = dev->pci->irq;
934
935         init_MUTEX(&dev->dmasound.lock);
936
937         if ((err = snd_card_saa7134_new_mixer(chip)) < 0)
938                 goto __nodev;
939
940         if ((err = snd_card_saa7134_pcm(chip, 0)) < 0)
941                 goto __nodev;
942
943         snd_card_set_dev(card, &chip->pci->dev);
944
945         /* End of "creation" */
946
947         strcpy(card->shortname, "SAA7134");
948         sprintf(card->longname, "%s at 0x%lx irq %d",
949                 chip->dev->name, chip->iobase, chip->irq);
950
951         printk(KERN_INFO "%s/alsa: %s registered as card %d\n",dev->name,card->longname,index[devnum]);
952
953         if ((err = snd_card_register(card)) == 0) {
954                 snd_saa7134_cards[devnum] = card;
955                 return 0;
956         }
957
958 __nodev:
959         snd_card_free(card);
960         return err;
961 }
962
963
964 static int alsa_device_init(struct saa7134_dev *dev)
965 {
966         dev->dmasound.priv_data = dev;
967         alsa_card_saa7134_create(dev,dev->nr);
968         return 1;
969 }
970
971 static int alsa_device_exit(struct saa7134_dev *dev)
972 {
973
974         snd_card_free(snd_saa7134_cards[dev->nr]);
975         snd_saa7134_cards[dev->nr] = NULL;
976         return 1;
977 }
978
979 /*
980  * Module initializer
981  *
982  * Loops through present saa7134 cards, and assigns an ALSA device
983  * to each one
984  *
985  */
986
987 static int saa7134_alsa_init(void)
988 {
989         struct saa7134_dev *dev = NULL;
990         struct list_head *list;
991
992         if (!dmasound_init && !dmasound_exit) {
993                 dmasound_init = alsa_device_init;
994                 dmasound_exit = alsa_device_exit;
995         } else {
996                 printk(KERN_WARNING "saa7134 ALSA: can't load, DMA sound handler already assigned (probably to OSS)\n");
997                 return -EBUSY;
998         }
999
1000         printk(KERN_INFO "saa7134 ALSA driver for DMA sound loaded\n");
1001
1002         list_for_each(list,&saa7134_devlist) {
1003                 dev = list_entry(list, struct saa7134_dev, devlist);
1004                 if (dev->dmasound.priv_data == NULL) {
1005                         alsa_device_init(dev);
1006                 } else {
1007                         printk(KERN_ERR "saa7134 ALSA: DMA sound is being handled by OSS. ignoring %s\n",dev->name);
1008                         return -EBUSY;
1009                 }
1010         }
1011
1012         if (dev == NULL)
1013                 printk(KERN_INFO "saa7134 ALSA: no saa7134 cards found\n");
1014
1015         return 0;
1016
1017 }
1018
1019 /*
1020  * Module destructor
1021  */
1022
1023 static void saa7134_alsa_exit(void)
1024 {
1025         int idx;
1026
1027         for (idx = 0; idx < SNDRV_CARDS; idx++) {
1028                 snd_card_free(snd_saa7134_cards[idx]);
1029         }
1030
1031         dmasound_init = NULL;
1032         dmasound_exit = NULL;
1033         printk(KERN_INFO "saa7134 ALSA driver for DMA sound unloaded\n");
1034
1035         return;
1036 }
1037
1038 /* We initialize this late, to make sure the sound system is up and running */
1039 late_initcall(saa7134_alsa_init);
1040 module_exit(saa7134_alsa_exit);
1041 MODULE_LICENSE("GPL");
1042 MODULE_AUTHOR("Ricardo Cerqueira");
1043
1044
1045