Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland...
[linux-2.6] / 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 <sound/driver.h>
24 #include <linux/init.h>
25 #include <linux/slab.h>
26 #include <linux/time.h>
27 #include <linux/wait.h>
28 #include <linux/moduleparam.h>
29 #include <linux/module.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 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
55 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
56 static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 0};
57
58 module_param_array(index, int, NULL, 0444);
59 MODULE_PARM_DESC(index, "Index value for SAA7134 capture interface(s).");
60
61 #define dprintk(fmt, arg...)    if (debug) \
62         printk(KERN_DEBUG "%s/alsa: " fmt, dev->name , ## arg)
63
64 /*
65  * Main chip structure
66  */
67 typedef struct snd_card_saa7134 {
68         snd_card_t *card;
69         spinlock_t mixer_lock;
70         int mixer_volume[MIXER_ADDR_LAST+1][2];
71         int capture_source[MIXER_ADDR_LAST+1][2];
72         struct pci_dev *pci;
73         struct saa7134_dev *dev;
74
75         unsigned long iobase;
76         int irq;
77
78         spinlock_t lock;
79 } snd_card_saa7134_t;
80
81
82
83 /*
84  * PCM structure
85  */
86
87 typedef struct snd_card_saa7134_pcm {
88         struct saa7134_dev *dev;
89
90         spinlock_t lock;
91
92         snd_pcm_substream_t *substream;
93 } snd_card_saa7134_pcm_t;
94
95 static snd_card_t *snd_saa7134_cards[SNDRV_CARDS];
96
97
98 /*
99  * saa7134 DMA audio stop
100  *
101  *   Called when the capture device is released or the buffer overflows
102  *
103  *   - Copied verbatim from saa7134-oss's dsp_dma_stop.
104  *
105  */
106
107 static void saa7134_dma_stop(struct saa7134_dev *dev)
108 {
109         dev->dmasound.dma_blk     = -1;
110         dev->dmasound.dma_running = 0;
111         saa7134_set_dmabits(dev);
112 }
113
114 /*
115  * saa7134 DMA audio start
116  *
117  *   Called when preparing the capture device for use
118  *
119  *   - Copied verbatim from saa7134-oss's dsp_dma_start.
120  *
121  */
122
123 static void saa7134_dma_start(struct saa7134_dev *dev)
124 {
125         dev->dmasound.dma_blk     = 0;
126         dev->dmasound.dma_running = 1;
127         saa7134_set_dmabits(dev);
128 }
129
130 /*
131  * saa7134 audio DMA IRQ handler
132  *
133  *   Called whenever we get an SAA7134_IRQ_REPORT_DONE_RA3 interrupt
134  *   Handles shifting between the 2 buffers, manages the read counters,
135  *  and notifies ALSA when periods elapse
136  *
137  *   - Mostly copied from saa7134-oss's saa7134_irq_oss_done.
138  *
139  */
140
141 static void saa7134_irq_alsa_done(struct saa7134_dev *dev,
142                                   unsigned long status)
143 {
144         int next_blk, reg = 0;
145
146         spin_lock(&dev->slock);
147         if (UNSET == dev->dmasound.dma_blk) {
148                 dprintk("irq: recording stopped\n");
149                 goto done;
150         }
151         if (0 != (status & 0x0f000000))
152                 dprintk("irq: lost %ld\n", (status >> 24) & 0x0f);
153         if (0 == (status & 0x10000000)) {
154                 /* odd */
155                 if (0 == (dev->dmasound.dma_blk & 0x01))
156                         reg = SAA7134_RS_BA1(6);
157         } else {
158                 /* even */
159                 if (1 == (dev->dmasound.dma_blk & 0x01))
160                         reg = SAA7134_RS_BA2(6);
161         }
162         if (0 == reg) {
163                 dprintk("irq: field oops [%s]\n",
164                         (status & 0x10000000) ? "even" : "odd");
165                 goto done;
166         }
167
168         if (dev->dmasound.read_count >= dev->dmasound.blksize * (dev->dmasound.blocks-2)) {
169                 dprintk("irq: overrun [full=%d/%d] - Blocks in %d\n",dev->dmasound.read_count,
170                         dev->dmasound.bufsize, dev->dmasound.blocks);
171                 spin_unlock(&dev->slock);
172                 snd_pcm_stop(dev->dmasound.substream,SNDRV_PCM_STATE_XRUN);
173                 return;
174         }
175
176         /* next block addr */
177         next_blk = (dev->dmasound.dma_blk + 2) % dev->dmasound.blocks;
178         saa_writel(reg,next_blk * dev->dmasound.blksize);
179         if (debug > 2)
180                 dprintk("irq: ok, %s, next_blk=%d, addr=%x, blocks=%u, size=%u, read=%u\n",
181                         (status & 0x10000000) ? "even" : "odd ", next_blk,
182                         next_blk * dev->dmasound.blksize, dev->dmasound.blocks, dev->dmasound.blksize, dev->dmasound.read_count);
183
184         /* update status & wake waiting readers */
185         dev->dmasound.dma_blk = (dev->dmasound.dma_blk + 1) % dev->dmasound.blocks;
186         dev->dmasound.read_count += dev->dmasound.blksize;
187
188         dev->dmasound.recording_on = reg;
189
190         if (dev->dmasound.read_count >= snd_pcm_lib_period_bytes(dev->dmasound.substream)) {
191                 spin_unlock(&dev->slock);
192                 snd_pcm_period_elapsed(dev->dmasound.substream);
193                 spin_lock(&dev->slock);
194         }
195
196  done:
197         spin_unlock(&dev->slock);
198
199 }
200
201 /*
202  * IRQ request handler
203  *
204  *   Runs along with saa7134's IRQ handler, discards anything that isn't
205  *   DMA sound
206  *
207  */
208
209 static irqreturn_t saa7134_alsa_irq(int irq, void *dev_id, struct pt_regs *regs)
210 {
211         struct saa7134_dmasound *dmasound = dev_id;
212         struct saa7134_dev *dev = dmasound->priv_data;
213
214         unsigned long report, status;
215         int loop, handled = 0;
216
217         for (loop = 0; loop < 10; loop++) {
218                 report = saa_readl(SAA7134_IRQ_REPORT);
219                 status = saa_readl(SAA7134_IRQ_STATUS);
220
221                 if (report & SAA7134_IRQ_REPORT_DONE_RA3) {
222                         handled = 1;
223                         saa_writel(SAA7134_IRQ_REPORT,report);
224                         saa7134_irq_alsa_done(dev, status);
225                 } else {
226                         goto out;
227                 }
228         }
229
230         if (loop == 10) {
231                 dprintk("error! looping IRQ!");
232         }
233
234 out:
235         return IRQ_RETVAL(handled);
236 }
237
238 /*
239  * ALSA capture trigger
240  *
241  *   - One of the ALSA capture callbacks.
242  *
243  *   Called whenever a capture is started or stopped. Must be defined,
244  *   but there's nothing we want to do here
245  *
246  */
247
248 static int snd_card_saa7134_capture_trigger(snd_pcm_substream_t * substream,
249                                           int cmd)
250 {
251         snd_pcm_runtime_t *runtime = substream->runtime;
252         snd_card_saa7134_pcm_t *pcm = runtime->private_data;
253         struct saa7134_dev *dev=pcm->dev;
254         int err = 0;
255
256         spin_lock(&dev->slock);
257         if (cmd == SNDRV_PCM_TRIGGER_START) {
258                 /* start dma */
259                 saa7134_dma_start(dev);
260         } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
261                 /* stop dma */
262                 saa7134_dma_stop(dev);
263         } else {
264                 err = -EINVAL;
265         }
266         spin_unlock(&dev->slock);
267
268         return err;
269 }
270
271 /*
272  * DMA buffer initialization
273  *
274  *   Uses V4L functions to initialize the DMA. Shouldn't be necessary in
275  *  ALSA, but I was unable to use ALSA's own DMA, and had to force the
276  *  usage of V4L's
277  *
278  *   - Copied verbatim from saa7134-oss.
279  *
280  */
281
282 static int dsp_buffer_init(struct saa7134_dev *dev)
283 {
284         int err;
285
286         BUG_ON(!dev->dmasound.bufsize);
287
288         videobuf_dma_init(&dev->dmasound.dma);
289         err = videobuf_dma_init_kernel(&dev->dmasound.dma, PCI_DMA_FROMDEVICE,
290                                        (dev->dmasound.bufsize + PAGE_SIZE) >> PAGE_SHIFT);
291         if (0 != err)
292                 return err;
293         return 0;
294 }
295
296 /*
297  * DMA buffer release
298  *
299  *   Called after closing the device, during snd_card_saa7134_capture_close
300  *
301  */
302
303 static int dsp_buffer_free(struct saa7134_dev *dev)
304 {
305         if (!dev->dmasound.blksize)
306                 BUG();
307
308         videobuf_dma_free(&dev->dmasound.dma);
309
310         dev->dmasound.blocks  = 0;
311         dev->dmasound.blksize = 0;
312         dev->dmasound.bufsize = 0;
313
314        return 0;
315 }
316
317
318 /*
319  * ALSA PCM preparation
320  *
321  *   - One of the ALSA capture callbacks.
322  *
323  *   Called right after the capture device is opened, this function configures
324  *  the buffer using the previously defined functions, allocates the memory,
325  *  sets up the hardware registers, and then starts the DMA. When this function
326  *  returns, the audio should be flowing.
327  *
328  */
329
330 static int snd_card_saa7134_capture_prepare(snd_pcm_substream_t * substream)
331 {
332         snd_pcm_runtime_t *runtime = substream->runtime;
333         int bswap, sign;
334         u32 fmt, control;
335         snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
336         struct saa7134_dev *dev;
337         snd_card_saa7134_pcm_t *pcm = runtime->private_data;
338
339         pcm->dev->dmasound.substream = substream;
340
341         dev = saa7134->dev;
342
343         if (snd_pcm_format_width(runtime->format) == 8)
344                 fmt = 0x00;
345         else
346                 fmt = 0x01;
347
348         if (snd_pcm_format_signed(runtime->format))
349                 sign = 1;
350         else
351                 sign = 0;
352
353         if (snd_pcm_format_big_endian(runtime->format))
354                 bswap = 1;
355         else
356                 bswap = 0;
357
358         switch (dev->pci->device) {
359           case PCI_DEVICE_ID_PHILIPS_SAA7134:
360                 if (1 == runtime->channels)
361                         fmt |= (1 << 3);
362                 if (2 == runtime->channels)
363                         fmt |= (3 << 3);
364                 if (sign)
365                         fmt |= 0x04;
366
367                 fmt |= (MIXER_ADDR_TVTUNER == dev->dmasound.input) ? 0xc0 : 0x80;
368                 saa_writeb(SAA7134_NUM_SAMPLES0, ((dev->dmasound.blksize - 1) & 0x0000ff));
369                 saa_writeb(SAA7134_NUM_SAMPLES1, ((dev->dmasound.blksize - 1) & 0x00ff00) >>  8);
370                 saa_writeb(SAA7134_NUM_SAMPLES2, ((dev->dmasound.blksize - 1) & 0xff0000) >> 16);
371                 saa_writeb(SAA7134_AUDIO_FORMAT_CTRL, fmt);
372
373                 break;
374           case PCI_DEVICE_ID_PHILIPS_SAA7133:
375           case PCI_DEVICE_ID_PHILIPS_SAA7135:
376                 if (1 == runtime->channels)
377                         fmt |= (1 << 4);
378                 if (2 == runtime->channels)
379                         fmt |= (2 << 4);
380                 if (!sign)
381                         fmt |= 0x04;
382                 saa_writel(SAA7133_NUM_SAMPLES, dev->dmasound.blksize -1);
383                 saa_writel(SAA7133_AUDIO_CHANNEL, 0x543210 | (fmt << 24));
384                 break;
385         }
386
387         dprintk("rec_start: afmt=%d ch=%d  =>  fmt=0x%x swap=%c\n",
388                 runtime->format, runtime->channels, fmt,
389                 bswap ? 'b' : '-');
390         /* dma: setup channel 6 (= AUDIO) */
391         control = SAA7134_RS_CONTROL_BURST_16 |
392                 SAA7134_RS_CONTROL_ME |
393                 (dev->dmasound.pt.dma >> 12);
394         if (bswap)
395                 control |= SAA7134_RS_CONTROL_BSWAP;
396
397         saa_writel(SAA7134_RS_BA1(6),0);
398         saa_writel(SAA7134_RS_BA2(6),dev->dmasound.blksize);
399         saa_writel(SAA7134_RS_PITCH(6),0);
400         saa_writel(SAA7134_RS_CONTROL(6),control);
401
402         dev->dmasound.rate = runtime->rate;
403
404         return 0;
405
406 }
407
408 /*
409  * ALSA pointer fetching
410  *
411  *   - One of the ALSA capture callbacks.
412  *
413  *   Called whenever a period elapses, it must return the current hardware
414  *  position of the buffer.
415  *   Also resets the read counter used to prevent overruns
416  *
417  */
418
419 static snd_pcm_uframes_t snd_card_saa7134_capture_pointer(snd_pcm_substream_t * substream)
420 {
421         snd_pcm_runtime_t *runtime = substream->runtime;
422         snd_card_saa7134_pcm_t *pcm = runtime->private_data;
423         struct saa7134_dev *dev=pcm->dev;
424
425         if (dev->dmasound.read_count) {
426                 dev->dmasound.read_count  -= snd_pcm_lib_period_bytes(substream);
427                 dev->dmasound.read_offset += snd_pcm_lib_period_bytes(substream);
428                 if (dev->dmasound.read_offset == dev->dmasound.bufsize)
429                         dev->dmasound.read_offset = 0;
430         }
431
432         return bytes_to_frames(runtime, dev->dmasound.read_offset);
433 }
434
435 /*
436  * ALSA hardware capabilities definition
437  */
438
439 static snd_pcm_hardware_t snd_card_saa7134_capture =
440 {
441         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
442                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
443                                  SNDRV_PCM_INFO_MMAP_VALID),
444         .formats =              SNDRV_PCM_FMTBIT_S16_LE | \
445                                 SNDRV_PCM_FMTBIT_S16_BE | \
446                                 SNDRV_PCM_FMTBIT_S8 | \
447                                 SNDRV_PCM_FMTBIT_U8 | \
448                                 SNDRV_PCM_FMTBIT_U16_LE | \
449                                 SNDRV_PCM_FMTBIT_U16_BE,
450         .rates =                SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_48000,
451         .rate_min =             32000,
452         .rate_max =             48000,
453         .channels_min =         1,
454         .channels_max =         2,
455         .buffer_bytes_max =     (256*1024),
456         .period_bytes_min =     64,
457         .period_bytes_max =     (256*1024),
458         .periods_min =          2,
459         .periods_max =          1024,
460 };
461
462 static void snd_card_saa7134_runtime_free(snd_pcm_runtime_t *runtime)
463 {
464         snd_card_saa7134_pcm_t *pcm = runtime->private_data;
465
466         kfree(pcm);
467 }
468
469
470 /*
471  * ALSA hardware params
472  *
473  *   - One of the ALSA capture callbacks.
474  *
475  *   Called on initialization, right before the PCM preparation
476  *
477  */
478
479 static int snd_card_saa7134_hw_params(snd_pcm_substream_t * substream,
480                                     snd_pcm_hw_params_t * hw_params)
481 {
482         snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
483         struct saa7134_dev *dev;
484         unsigned int period_size, periods;
485         int err;
486
487         period_size = params_period_bytes(hw_params);
488         periods = params_periods(hw_params);
489
490         snd_assert(period_size >= 0x100 && period_size <= 0x10000,
491                    return -EINVAL);
492         snd_assert(periods >= 2, return -EINVAL);
493         snd_assert(period_size * periods <= 1024 * 1024, return -EINVAL);
494
495         dev = saa7134->dev;
496
497         if (dev->dmasound.blocks == periods &&
498             dev->dmasound.blksize == period_size)
499                 return 0;
500
501         /* release the old buffer */
502         if (substream->runtime->dma_area) {
503                 saa7134_pgtable_free(dev->pci, &dev->dmasound.pt);
504                 videobuf_dma_pci_unmap(dev->pci, &dev->dmasound.dma);
505                 dsp_buffer_free(dev);
506                 substream->runtime->dma_area = NULL;
507         }
508         dev->dmasound.blocks  = periods;
509         dev->dmasound.blksize = period_size;
510         dev->dmasound.bufsize = period_size * periods;
511
512         err = dsp_buffer_init(dev);
513         if (0 != err) {
514                 dev->dmasound.blocks  = 0;
515                 dev->dmasound.blksize = 0;
516                 dev->dmasound.bufsize = 0;
517                 return err;
518         }
519
520         if (0 != (err = videobuf_dma_pci_map(dev->pci, &dev->dmasound.dma))) {
521                 dsp_buffer_free(dev);
522                 return err;
523         }
524         if (0 != (err = saa7134_pgtable_alloc(dev->pci,&dev->dmasound.pt))) {
525                 videobuf_dma_pci_unmap(dev->pci, &dev->dmasound.dma);
526                 dsp_buffer_free(dev);
527                 return err;
528         }
529         if (0 != (err = saa7134_pgtable_build(dev->pci,&dev->dmasound.pt,
530                                                 dev->dmasound.dma.sglist,
531                                                 dev->dmasound.dma.sglen,
532                                                 0))) {
533                 saa7134_pgtable_free(dev->pci, &dev->dmasound.pt);
534                 videobuf_dma_pci_unmap(dev->pci, &dev->dmasound.dma);
535                 dsp_buffer_free(dev);
536                 return err;
537         }
538
539         /* I should be able to use runtime->dma_addr in the control
540            byte, but it doesn't work. So I allocate the DMA using the
541            V4L functions, and force ALSA to use that as the DMA area */
542
543         substream->runtime->dma_area = dev->dmasound.dma.vmalloc;
544
545         return 1;
546
547 }
548
549 /*
550  * ALSA hardware release
551  *
552  *   - One of the ALSA capture callbacks.
553  *
554  *   Called after closing the device, but before snd_card_saa7134_capture_close
555  *   It stops the DMA audio and releases the buffers.
556  *
557  */
558
559 static int snd_card_saa7134_hw_free(snd_pcm_substream_t * substream)
560 {
561         snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
562         struct saa7134_dev *dev;
563
564         dev = saa7134->dev;
565
566         if (substream->runtime->dma_area) {
567                 saa7134_pgtable_free(dev->pci, &dev->dmasound.pt);
568                 videobuf_dma_pci_unmap(dev->pci, &dev->dmasound.dma);
569                 dsp_buffer_free(dev);
570                 substream->runtime->dma_area = NULL;
571         }
572
573         return 0;
574 }
575
576 /*
577  * ALSA capture finish
578  *
579  *   - One of the ALSA capture callbacks.
580  *
581  *   Called after closing the device.
582  *
583  */
584
585 static int snd_card_saa7134_capture_close(snd_pcm_substream_t * substream)
586 {
587         return 0;
588 }
589
590 /*
591  * ALSA capture start
592  *
593  *   - One of the ALSA capture callbacks.
594  *
595  *   Called when opening the device. It creates and populates the PCM
596  *  structure
597  *
598  */
599
600 static int snd_card_saa7134_capture_open(snd_pcm_substream_t * substream)
601 {
602         snd_pcm_runtime_t *runtime = substream->runtime;
603         snd_card_saa7134_pcm_t *pcm;
604         snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
605         struct saa7134_dev *dev = saa7134->dev;
606         int err;
607
608         down(&dev->dmasound.lock);
609
610         dev->dmasound.read_count  = 0;
611         dev->dmasound.read_offset = 0;
612
613         up(&dev->dmasound.lock);
614
615         pcm = kzalloc(sizeof(*pcm), GFP_KERNEL);
616         if (pcm == NULL)
617                 return -ENOMEM;
618
619         pcm->dev=saa7134->dev;
620
621         spin_lock_init(&pcm->lock);
622
623         pcm->substream = substream;
624         runtime->private_data = pcm;
625         runtime->private_free = snd_card_saa7134_runtime_free;
626         runtime->hw = snd_card_saa7134_capture;
627
628         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
629                 return err;
630
631         return 0;
632 }
633
634 /*
635  * ALSA capture callbacks definition
636  */
637
638 static snd_pcm_ops_t snd_card_saa7134_capture_ops = {
639         .open =                 snd_card_saa7134_capture_open,
640         .close =                snd_card_saa7134_capture_close,
641         .ioctl =                snd_pcm_lib_ioctl,
642         .hw_params =            snd_card_saa7134_hw_params,
643         .hw_free =              snd_card_saa7134_hw_free,
644         .prepare =              snd_card_saa7134_capture_prepare,
645         .trigger =              snd_card_saa7134_capture_trigger,
646         .pointer =              snd_card_saa7134_capture_pointer,
647 };
648
649 /*
650  * ALSA PCM setup
651  *
652  *   Called when initializing the board. Sets up the name and hooks up
653  *  the callbacks
654  *
655  */
656
657 static int snd_card_saa7134_pcm(snd_card_saa7134_t *saa7134, int device)
658 {
659         snd_pcm_t *pcm;
660         int err;
661
662         if ((err = snd_pcm_new(saa7134->card, "SAA7134 PCM", device, 0, 1, &pcm)) < 0)
663                 return err;
664         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_card_saa7134_capture_ops);
665         pcm->private_data = saa7134;
666         pcm->info_flags = 0;
667         strcpy(pcm->name, "SAA7134 PCM");
668         return 0;
669 }
670
671 #define SAA713x_VOLUME(xname, xindex, addr) \
672 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
673   .info = snd_saa7134_volume_info, \
674   .get = snd_saa7134_volume_get, .put = snd_saa7134_volume_put, \
675   .private_value = addr }
676
677 static int snd_saa7134_volume_info(snd_kcontrol_t * kcontrol, snd_ctl_elem_info_t * uinfo)
678 {
679         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
680         uinfo->count = 2;
681         uinfo->value.integer.min = 0;
682         uinfo->value.integer.max = 20;
683         return 0;
684 }
685
686 static int snd_saa7134_volume_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
687 {
688         snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
689         int addr = kcontrol->private_value;
690
691         ucontrol->value.integer.value[0] = chip->mixer_volume[addr][0];
692         ucontrol->value.integer.value[1] = chip->mixer_volume[addr][1];
693         return 0;
694 }
695
696 static int snd_saa7134_volume_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
697 {
698         snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
699         int change, addr = kcontrol->private_value;
700         int left, right;
701
702         left = ucontrol->value.integer.value[0];
703         if (left < 0)
704                 left = 0;
705         if (left > 20)
706                 left = 20;
707         right = ucontrol->value.integer.value[1];
708         if (right < 0)
709                 right = 0;
710         if (right > 20)
711                 right = 20;
712         spin_lock_irq(&chip->mixer_lock);
713         change = chip->mixer_volume[addr][0] != left ||
714                  chip->mixer_volume[addr][1] != right;
715         chip->mixer_volume[addr][0] = left;
716         chip->mixer_volume[addr][1] = right;
717         spin_unlock_irq(&chip->mixer_lock);
718         return change;
719 }
720
721 #define SAA713x_CAPSRC(xname, xindex, addr) \
722 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
723   .info = snd_saa7134_capsrc_info, \
724   .get = snd_saa7134_capsrc_get, .put = snd_saa7134_capsrc_put, \
725   .private_value = addr }
726
727 static int snd_saa7134_capsrc_info(snd_kcontrol_t * kcontrol, snd_ctl_elem_info_t * uinfo)
728 {
729         uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
730         uinfo->count = 2;
731         uinfo->value.integer.min = 0;
732         uinfo->value.integer.max = 1;
733         return 0;
734 }
735
736 static int snd_saa7134_capsrc_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
737 {
738         snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
739         int addr = kcontrol->private_value;
740
741         spin_lock_irq(&chip->mixer_lock);
742         ucontrol->value.integer.value[0] = chip->capture_source[addr][0];
743         ucontrol->value.integer.value[1] = chip->capture_source[addr][1];
744         spin_unlock_irq(&chip->mixer_lock);
745
746         return 0;
747 }
748
749 static int snd_saa7134_capsrc_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
750 {
751         snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
752         int change, addr = kcontrol->private_value;
753         int left, right;
754         u32 anabar, xbarin;
755         int analog_io, rate;
756         struct saa7134_dev *dev;
757
758         dev = chip->dev;
759
760         left = ucontrol->value.integer.value[0] & 1;
761         right = ucontrol->value.integer.value[1] & 1;
762         spin_lock_irq(&chip->mixer_lock);
763
764         change = chip->capture_source[addr][0] != left ||
765                  chip->capture_source[addr][1] != right;
766         chip->capture_source[addr][0] = left;
767         chip->capture_source[addr][1] = right;
768         dev->dmasound.input=addr;
769         spin_unlock_irq(&chip->mixer_lock);
770
771
772         if (change) {
773           switch (dev->pci->device) {
774
775            case PCI_DEVICE_ID_PHILIPS_SAA7134:
776                 switch (addr) {
777                         case MIXER_ADDR_TVTUNER:
778                                 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0xc0);
779                                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, 0x00);
780                                 break;
781                         case MIXER_ADDR_LINE1:
782                         case MIXER_ADDR_LINE2:
783                                 analog_io = (MIXER_ADDR_LINE1 == addr) ? 0x00 : 0x08;
784                                 rate = (32000 == dev->dmasound.rate) ? 0x01 : 0x03;
785                                 saa_andorb(SAA7134_ANALOG_IO_SELECT,  0x08, analog_io);
786                                 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0x80);
787                                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, rate);
788                                 break;
789                 }
790
791                 break;
792            case PCI_DEVICE_ID_PHILIPS_SAA7133:
793            case PCI_DEVICE_ID_PHILIPS_SAA7135:
794                 xbarin = 0x03; // adc
795                 anabar = 0;
796                 switch (addr) {
797                         case MIXER_ADDR_TVTUNER:
798                                 xbarin = 0; // Demodulator
799                                 anabar = 2; // DACs
800                                 break;
801                         case MIXER_ADDR_LINE1:
802                                 anabar = 0;  // aux1, aux1
803                                 break;
804                         case MIXER_ADDR_LINE2:
805                                 anabar = 9;  // aux2, aux2
806                                 break;
807                 }
808
809                 /* output xbar always main channel */
810                 saa_dsp_writel(dev, SAA7133_DIGITAL_OUTPUT_SEL1, 0xbbbb10);
811
812                 if (left || right) { // We've got data, turn the input on
813                   saa_dsp_writel(dev, SAA7133_DIGITAL_INPUT_XBAR1, xbarin);
814                   saa_writel(SAA7133_ANALOG_IO_SELECT, anabar);
815                 } else {
816                   saa_dsp_writel(dev, SAA7133_DIGITAL_INPUT_XBAR1, 0);
817                   saa_writel(SAA7133_ANALOG_IO_SELECT, 0);
818                 }
819                 break;
820           }
821         }
822
823         return change;
824 }
825
826 static snd_kcontrol_new_t snd_saa7134_controls[] = {
827 SAA713x_VOLUME("Video Volume", 0, MIXER_ADDR_TVTUNER),
828 SAA713x_CAPSRC("Video Capture Switch", 0, MIXER_ADDR_TVTUNER),
829 SAA713x_VOLUME("Line Volume", 1, MIXER_ADDR_LINE1),
830 SAA713x_CAPSRC("Line Capture Switch", 1, MIXER_ADDR_LINE1),
831 SAA713x_VOLUME("Line Volume", 2, MIXER_ADDR_LINE2),
832 SAA713x_CAPSRC("Line Capture Switch", 2, MIXER_ADDR_LINE2),
833 };
834
835 /*
836  * ALSA mixer setup
837  *
838  *   Called when initializing the board. Sets up the name and hooks up
839  *  the callbacks
840  *
841  */
842
843 static int snd_card_saa7134_new_mixer(snd_card_saa7134_t * chip)
844 {
845         snd_card_t *card = chip->card;
846         unsigned int idx;
847         int err;
848
849         snd_assert(chip != NULL, return -EINVAL);
850         strcpy(card->mixername, "SAA7134 Mixer");
851
852         for (idx = 0; idx < ARRAY_SIZE(snd_saa7134_controls); idx++) {
853                 if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_saa7134_controls[idx], chip))) < 0)
854                         return err;
855         }
856         return 0;
857 }
858
859 static void snd_saa7134_free(snd_card_t * card)
860 {
861         snd_card_saa7134_t *chip = card->private_data;
862
863         if (chip->dev->dmasound.priv_data == NULL)
864                 return;
865
866         if (chip->irq >= 0) {
867                 synchronize_irq(chip->irq);
868                 free_irq(chip->irq, &chip->dev->dmasound);
869         }
870
871         chip->dev->dmasound.priv_data = NULL;
872
873 }
874
875 /*
876  * ALSA initialization
877  *
878  *   Called by the init routine, once for each saa7134 device present,
879  *  it creates the basic structures and registers the ALSA devices
880  *
881  */
882
883 static int alsa_card_saa7134_create(struct saa7134_dev *dev, int devnum)
884 {
885
886         snd_card_t *card;
887         snd_card_saa7134_t *chip;
888         int err;
889
890
891         if (devnum >= SNDRV_CARDS)
892                 return -ENODEV;
893         if (!enable[devnum])
894                 return -ENODEV;
895
896         card = snd_card_new(index[devnum], id[devnum], THIS_MODULE, sizeof(snd_card_saa7134_t));
897
898         if (card == NULL)
899                 return -ENOMEM;
900
901         strcpy(card->driver, "SAA7134");
902
903         /* Card "creation" */
904
905         card->private_free = snd_saa7134_free;
906         chip = (snd_card_saa7134_t *) card->private_data;
907
908         spin_lock_init(&chip->lock);
909         spin_lock_init(&chip->mixer_lock);
910
911         chip->dev = dev;
912
913         chip->card = card;
914
915         chip->pci = dev->pci;
916         chip->iobase = pci_resource_start(dev->pci, 0);
917
918
919         err = request_irq(dev->pci->irq, saa7134_alsa_irq,
920                                 SA_SHIRQ | SA_INTERRUPT, dev->name,
921                                 (void*) &dev->dmasound);
922
923         if (err < 0) {
924                 printk(KERN_ERR "%s: can't get IRQ %d for ALSA\n",
925                         dev->name, dev->pci->irq);
926                 goto __nodev;
927         }
928
929         chip->irq = dev->pci->irq;
930
931         init_MUTEX(&dev->dmasound.lock);
932
933         if ((err = snd_card_saa7134_new_mixer(chip)) < 0)
934                 goto __nodev;
935
936         if ((err = snd_card_saa7134_pcm(chip, 0)) < 0)
937                 goto __nodev;
938
939         snd_card_set_dev(card, &chip->pci->dev);
940
941         /* End of "creation" */
942
943         strcpy(card->shortname, "SAA7134");
944         sprintf(card->longname, "%s at 0x%lx irq %d",
945                 chip->dev->name, chip->iobase, chip->irq);
946
947         printk(KERN_INFO "%s/alsa: %s registered as card %d\n",dev->name,card->longname,index[devnum]);
948
949         if ((err = snd_card_register(card)) == 0) {
950                 snd_saa7134_cards[devnum] = card;
951                 return 0;
952         }
953
954 __nodev:
955         snd_card_free(card);
956         return err;
957 }
958
959
960 static int alsa_device_init(struct saa7134_dev *dev)
961 {
962         dev->dmasound.priv_data = dev;
963         alsa_card_saa7134_create(dev,dev->nr);
964         return 1;
965 }
966
967 static int alsa_device_exit(struct saa7134_dev *dev)
968 {
969
970         snd_card_free(snd_saa7134_cards[dev->nr]);
971         snd_saa7134_cards[dev->nr] = NULL;
972         return 1;
973 }
974
975 /*
976  * Module initializer
977  *
978  * Loops through present saa7134 cards, and assigns an ALSA device
979  * to each one
980  *
981  */
982
983 static int saa7134_alsa_init(void)
984 {
985         struct saa7134_dev *dev = NULL;
986         struct list_head *list;
987
988         printk(KERN_INFO "saa7134 ALSA driver for DMA sound loaded\n");
989
990         list_for_each(list,&saa7134_devlist) {
991                 dev = list_entry(list, struct saa7134_dev, devlist);
992                 if (dev->dmasound.priv_data == NULL) {
993                         alsa_device_init(dev);
994                 } else {
995                         printk(KERN_ERR "saa7134 ALSA: DMA sound is being handled by OSS. ignoring %s\n",dev->name);
996                         return -EBUSY;
997                 }
998         }
999
1000         dmasound_init = alsa_device_init;
1001         dmasound_exit = alsa_device_exit;
1002
1003         if (dev == NULL)
1004                 printk(KERN_INFO "saa7134 ALSA: no saa7134 cards found\n");
1005
1006         return 0;
1007 }
1008
1009 /*
1010  * Module destructor
1011  */
1012
1013 static void saa7134_alsa_exit(void)
1014 {
1015         int idx;
1016
1017         for (idx = 0; idx < SNDRV_CARDS; idx++) {
1018                 snd_card_free(snd_saa7134_cards[idx]);
1019         }
1020
1021         printk(KERN_INFO "saa7134 ALSA driver for DMA sound unloaded\n");
1022
1023         return;
1024 }
1025
1026 module_init(saa7134_alsa_init);
1027 module_exit(saa7134_alsa_exit);
1028 MODULE_LICENSE("GPL");
1029 MODULE_AUTHOR("Ricardo Cerqueira");