Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
[linux-2.6] / drivers / media / video / saa7134 / saa7134-alsa.c
1 /*
2  *   SAA713x ALSA support for V4L
3  *
4  *   This program is free software; you can redistribute it and/or modify
5  *   it under the terms of the GNU General Public License as published by
6  *   the Free Software Foundation, version 2
7  *
8  *   This program is distributed in the hope that it will be useful,
9  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
10  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11  *   GNU General Public License for more details.
12  *
13  *   You should have received a copy of the GNU General Public License
14  *   along with this program; if not, write to the Free Software
15  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
16  *
17  */
18
19 #include <linux/init.h>
20 #include <linux/slab.h>
21 #include <linux/time.h>
22 #include <linux/wait.h>
23 #include <linux/module.h>
24 #include <sound/driver.h>
25 #include <sound/core.h>
26 #include <sound/control.h>
27 #include <sound/pcm.h>
28 #include <sound/pcm_params.h>
29 #include <sound/initval.h>
30 #include <linux/interrupt.h>
31
32 #include "saa7134.h"
33 #include "saa7134-reg.h"
34
35 static unsigned int debug  = 0;
36 module_param(debug, int, 0644);
37 MODULE_PARM_DESC(debug,"enable debug messages [alsa]");
38
39 /*
40  * Configuration macros
41  */
42
43 /* defaults */
44 #define MIXER_ADDR_TVTUNER      0
45 #define MIXER_ADDR_LINE1        1
46 #define MIXER_ADDR_LINE2        2
47 #define MIXER_ADDR_LAST         2
48
49
50 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
51 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
52 static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 1};
53
54 module_param_array(index, int, NULL, 0444);
55 module_param_array(enable, int, NULL, 0444);
56 MODULE_PARM_DESC(index, "Index value for SAA7134 capture interface(s).");
57 MODULE_PARM_DESC(enable, "Enable (or not) the SAA7134 capture interface(s).");
58
59 #define dprintk(fmt, arg...)    if (debug) \
60         printk(KERN_DEBUG "%s/alsa: " fmt, dev->name , ##arg)
61
62
63
64 /*
65  * Main chip structure
66  */
67
68 typedef struct snd_card_saa7134 {
69         struct snd_card *card;
70         spinlock_t mixer_lock;
71         int mixer_volume[MIXER_ADDR_LAST+1][2];
72         int capture_source[MIXER_ADDR_LAST+1][2];
73         struct pci_dev *pci;
74         struct saa7134_dev *dev;
75
76         unsigned long iobase;
77         s16 irq;
78         u16 mute_was_on;
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,
226                                    SAA7134_IRQ_REPORT_DONE_RA3);
227                         saa7134_irq_alsa_done(dev, status);
228                 } else {
229                         goto out;
230                 }
231         }
232
233         if (loop == 10) {
234                 dprintk("error! looping IRQ!");
235         }
236
237 out:
238         return IRQ_RETVAL(handled);
239 }
240
241 /*
242  * ALSA capture trigger
243  *
244  *   - One of the ALSA capture callbacks.
245  *
246  *   Called whenever a capture is started or stopped. Must be defined,
247  *   but there's nothing we want to do here
248  *
249  */
250
251 static int snd_card_saa7134_capture_trigger(struct snd_pcm_substream * substream,
252                                           int cmd)
253 {
254         struct snd_pcm_runtime *runtime = substream->runtime;
255         snd_card_saa7134_pcm_t *pcm = runtime->private_data;
256         struct saa7134_dev *dev=pcm->dev;
257         int err = 0;
258
259         spin_lock(&dev->slock);
260         if (cmd == SNDRV_PCM_TRIGGER_START) {
261                 /* start dma */
262                 saa7134_dma_start(dev);
263         } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
264                 /* stop dma */
265                 saa7134_dma_stop(dev);
266         } else {
267                 err = -EINVAL;
268         }
269         spin_unlock(&dev->slock);
270
271         return err;
272 }
273
274 /*
275  * DMA buffer initialization
276  *
277  *   Uses V4L functions to initialize the DMA. Shouldn't be necessary in
278  *  ALSA, but I was unable to use ALSA's own DMA, and had to force the
279  *  usage of V4L's
280  *
281  *   - Copied verbatim from saa7134-oss.
282  *
283  */
284
285 static int dsp_buffer_init(struct saa7134_dev *dev)
286 {
287         int err;
288
289         BUG_ON(!dev->dmasound.bufsize);
290
291         videobuf_dma_init(&dev->dmasound.dma);
292         err = videobuf_dma_init_kernel(&dev->dmasound.dma, PCI_DMA_FROMDEVICE,
293                                        (dev->dmasound.bufsize + PAGE_SIZE) >> PAGE_SHIFT);
294         if (0 != err)
295                 return err;
296         return 0;
297 }
298
299 /*
300  * DMA buffer release
301  *
302  *   Called after closing the device, during snd_card_saa7134_capture_close
303  *
304  */
305
306 static int dsp_buffer_free(struct saa7134_dev *dev)
307 {
308         BUG_ON(!dev->dmasound.blksize);
309
310         videobuf_dma_free(&dev->dmasound.dma);
311
312         dev->dmasound.blocks  = 0;
313         dev->dmasound.blksize = 0;
314         dev->dmasound.bufsize = 0;
315
316         return 0;
317 }
318
319
320 /*
321  * ALSA PCM preparation
322  *
323  *   - One of the ALSA capture callbacks.
324  *
325  *   Called right after the capture device is opened, this function configures
326  *  the buffer using the previously defined functions, allocates the memory,
327  *  sets up the hardware registers, and then starts the DMA. When this function
328  *  returns, the audio should be flowing.
329  *
330  */
331
332 static int snd_card_saa7134_capture_prepare(struct snd_pcm_substream * substream)
333 {
334         struct snd_pcm_runtime *runtime = substream->runtime;
335         int bswap, sign;
336         u32 fmt, control;
337         snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
338         struct saa7134_dev *dev;
339         snd_card_saa7134_pcm_t *pcm = runtime->private_data;
340
341         pcm->dev->dmasound.substream = substream;
342
343         dev = saa7134->dev;
344
345         if (snd_pcm_format_width(runtime->format) == 8)
346                 fmt = 0x00;
347         else
348                 fmt = 0x01;
349
350         if (snd_pcm_format_signed(runtime->format))
351                 sign = 1;
352         else
353                 sign = 0;
354
355         if (snd_pcm_format_big_endian(runtime->format))
356                 bswap = 1;
357         else
358                 bswap = 0;
359
360         switch (dev->pci->device) {
361           case PCI_DEVICE_ID_PHILIPS_SAA7134:
362                 if (1 == runtime->channels)
363                         fmt |= (1 << 3);
364                 if (2 == runtime->channels)
365                         fmt |= (3 << 3);
366                 if (sign)
367                         fmt |= 0x04;
368
369                 fmt |= (MIXER_ADDR_TVTUNER == dev->dmasound.input) ? 0xc0 : 0x80;
370                 saa_writeb(SAA7134_NUM_SAMPLES0, ((dev->dmasound.blksize - 1) & 0x0000ff));
371                 saa_writeb(SAA7134_NUM_SAMPLES1, ((dev->dmasound.blksize - 1) & 0x00ff00) >>  8);
372                 saa_writeb(SAA7134_NUM_SAMPLES2, ((dev->dmasound.blksize - 1) & 0xff0000) >> 16);
373                 saa_writeb(SAA7134_AUDIO_FORMAT_CTRL, fmt);
374
375                 break;
376           case PCI_DEVICE_ID_PHILIPS_SAA7133:
377           case PCI_DEVICE_ID_PHILIPS_SAA7135:
378                 if (1 == runtime->channels)
379                         fmt |= (1 << 4);
380                 if (2 == runtime->channels)
381                         fmt |= (2 << 4);
382                 if (!sign)
383                         fmt |= 0x04;
384                 saa_writel(SAA7133_NUM_SAMPLES, dev->dmasound.blksize -1);
385                 saa_writel(SAA7133_AUDIO_CHANNEL, 0x543210 | (fmt << 24));
386                 break;
387         }
388
389         dprintk("rec_start: afmt=%d ch=%d  =>  fmt=0x%x swap=%c\n",
390                 runtime->format, runtime->channels, fmt,
391                 bswap ? 'b' : '-');
392         /* dma: setup channel 6 (= AUDIO) */
393         control = SAA7134_RS_CONTROL_BURST_16 |
394                 SAA7134_RS_CONTROL_ME |
395                 (dev->dmasound.pt.dma >> 12);
396         if (bswap)
397                 control |= SAA7134_RS_CONTROL_BSWAP;
398
399         saa_writel(SAA7134_RS_BA1(6),0);
400         saa_writel(SAA7134_RS_BA2(6),dev->dmasound.blksize);
401         saa_writel(SAA7134_RS_PITCH(6),0);
402         saa_writel(SAA7134_RS_CONTROL(6),control);
403
404         dev->dmasound.rate = runtime->rate;
405
406         return 0;
407
408 }
409
410 /*
411  * ALSA pointer fetching
412  *
413  *   - One of the ALSA capture callbacks.
414  *
415  *   Called whenever a period elapses, it must return the current hardware
416  *  position of the buffer.
417  *   Also resets the read counter used to prevent overruns
418  *
419  */
420
421 static snd_pcm_uframes_t
422 snd_card_saa7134_capture_pointer(struct snd_pcm_substream * substream)
423 {
424         struct snd_pcm_runtime *runtime = substream->runtime;
425         snd_card_saa7134_pcm_t *pcm = runtime->private_data;
426         struct saa7134_dev *dev=pcm->dev;
427
428         if (dev->dmasound.read_count) {
429                 dev->dmasound.read_count  -= snd_pcm_lib_period_bytes(substream);
430                 dev->dmasound.read_offset += snd_pcm_lib_period_bytes(substream);
431                 if (dev->dmasound.read_offset == dev->dmasound.bufsize)
432                         dev->dmasound.read_offset = 0;
433         }
434
435         return bytes_to_frames(runtime, dev->dmasound.read_offset);
436 }
437
438 /*
439  * ALSA hardware capabilities definition
440  */
441
442 static struct snd_pcm_hardware snd_card_saa7134_capture =
443 {
444         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
445                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
446                                  SNDRV_PCM_INFO_MMAP_VALID),
447         .formats =              SNDRV_PCM_FMTBIT_S16_LE | \
448                                 SNDRV_PCM_FMTBIT_S16_BE | \
449                                 SNDRV_PCM_FMTBIT_S8 | \
450                                 SNDRV_PCM_FMTBIT_U8 | \
451                                 SNDRV_PCM_FMTBIT_U16_LE | \
452                                 SNDRV_PCM_FMTBIT_U16_BE,
453         .rates =                SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_48000,
454         .rate_min =             32000,
455         .rate_max =             48000,
456         .channels_min =         1,
457         .channels_max =         2,
458         .buffer_bytes_max =     (256*1024),
459         .period_bytes_min =     64,
460         .period_bytes_max =     (256*1024),
461         .periods_min =          4,
462         .periods_max =          1024,
463 };
464
465 static void snd_card_saa7134_runtime_free(struct snd_pcm_runtime *runtime)
466 {
467         snd_card_saa7134_pcm_t *pcm = runtime->private_data;
468
469         kfree(pcm);
470 }
471
472
473 /*
474  * ALSA hardware params
475  *
476  *   - One of the ALSA capture callbacks.
477  *
478  *   Called on initialization, right before the PCM preparation
479  *
480  */
481
482 static int snd_card_saa7134_hw_params(struct snd_pcm_substream * substream,
483                                       struct snd_pcm_hw_params * hw_params)
484 {
485         snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
486         struct saa7134_dev *dev;
487         unsigned int period_size, periods;
488         int err;
489
490         period_size = params_period_bytes(hw_params);
491         periods = params_periods(hw_params);
492
493         snd_assert(period_size >= 0x100 && period_size <= 0x10000,
494                    return -EINVAL);
495         snd_assert(periods >= 4, return -EINVAL);
496         snd_assert(period_size * periods <= 1024 * 1024, return -EINVAL);
497
498         dev = saa7134->dev;
499
500         if (dev->dmasound.blocks == periods &&
501             dev->dmasound.blksize == period_size)
502                 return 0;
503
504         /* release the old buffer */
505         if (substream->runtime->dma_area) {
506                 saa7134_pgtable_free(dev->pci, &dev->dmasound.pt);
507                 videobuf_pci_dma_unmap(dev->pci, &dev->dmasound.dma);
508                 dsp_buffer_free(dev);
509                 substream->runtime->dma_area = NULL;
510         }
511         dev->dmasound.blocks  = periods;
512         dev->dmasound.blksize = period_size;
513         dev->dmasound.bufsize = period_size * periods;
514
515         err = dsp_buffer_init(dev);
516         if (0 != err) {
517                 dev->dmasound.blocks  = 0;
518                 dev->dmasound.blksize = 0;
519                 dev->dmasound.bufsize = 0;
520                 return err;
521         }
522
523         if (0 != (err = videobuf_pci_dma_map(dev->pci, &dev->dmasound.dma))) {
524                 dsp_buffer_free(dev);
525                 return err;
526         }
527         if (0 != (err = saa7134_pgtable_alloc(dev->pci,&dev->dmasound.pt))) {
528                 videobuf_pci_dma_unmap(dev->pci, &dev->dmasound.dma);
529                 dsp_buffer_free(dev);
530                 return err;
531         }
532         if (0 != (err = saa7134_pgtable_build(dev->pci,&dev->dmasound.pt,
533                                                 dev->dmasound.dma.sglist,
534                                                 dev->dmasound.dma.sglen,
535                                                 0))) {
536                 saa7134_pgtable_free(dev->pci, &dev->dmasound.pt);
537                 videobuf_pci_dma_unmap(dev->pci, &dev->dmasound.dma);
538                 dsp_buffer_free(dev);
539                 return err;
540         }
541
542         /* I should be able to use runtime->dma_addr in the control
543            byte, but it doesn't work. So I allocate the DMA using the
544            V4L functions, and force ALSA to use that as the DMA area */
545
546         substream->runtime->dma_area = dev->dmasound.dma.vmalloc;
547         substream->runtime->dma_bytes = dev->dmasound.bufsize;
548         substream->runtime->dma_addr = 0;
549
550         return 0;
551
552 }
553
554 /*
555  * ALSA hardware release
556  *
557  *   - One of the ALSA capture callbacks.
558  *
559  *   Called after closing the device, but before snd_card_saa7134_capture_close
560  *   It stops the DMA audio and releases the buffers.
561  *
562  */
563
564 static int snd_card_saa7134_hw_free(struct snd_pcm_substream * substream)
565 {
566         snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
567         struct saa7134_dev *dev;
568
569         dev = saa7134->dev;
570
571         if (substream->runtime->dma_area) {
572                 saa7134_pgtable_free(dev->pci, &dev->dmasound.pt);
573                 videobuf_pci_dma_unmap(dev->pci, &dev->dmasound.dma);
574                 dsp_buffer_free(dev);
575                 substream->runtime->dma_area = NULL;
576         }
577
578         return 0;
579 }
580
581 /*
582  * ALSA capture finish
583  *
584  *   - One of the ALSA capture callbacks.
585  *
586  *   Called after closing the device.
587  *
588  */
589
590 static int snd_card_saa7134_capture_close(struct snd_pcm_substream * substream)
591 {
592         snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
593         struct saa7134_dev *dev = saa7134->dev;
594
595         if (saa7134->mute_was_on) {
596                 dev->ctl_mute = 1;
597                 saa7134_tvaudio_setmute(dev);
598         }
599         return 0;
600 }
601
602 /*
603  * ALSA capture start
604  *
605  *   - One of the ALSA capture callbacks.
606  *
607  *   Called when opening the device. It creates and populates the PCM
608  *  structure
609  *
610  */
611
612 static int snd_card_saa7134_capture_open(struct snd_pcm_substream * substream)
613 {
614         struct snd_pcm_runtime *runtime = substream->runtime;
615         snd_card_saa7134_pcm_t *pcm;
616         snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
617         struct saa7134_dev *dev = saa7134->dev;
618         int amux, err;
619
620         mutex_lock(&dev->dmasound.lock);
621
622         dev->dmasound.read_count  = 0;
623         dev->dmasound.read_offset = 0;
624
625         amux = dev->input->amux;
626         if ((amux < 1) || (amux > 3))
627                 amux = 1;
628         dev->dmasound.input  =  amux - 1;
629
630         mutex_unlock(&dev->dmasound.lock);
631
632         pcm = kzalloc(sizeof(*pcm), GFP_KERNEL);
633         if (pcm == NULL)
634                 return -ENOMEM;
635
636         pcm->dev=saa7134->dev;
637
638         spin_lock_init(&pcm->lock);
639
640         pcm->substream = substream;
641         runtime->private_data = pcm;
642         runtime->private_free = snd_card_saa7134_runtime_free;
643         runtime->hw = snd_card_saa7134_capture;
644
645         if (dev->ctl_mute != 0) {
646                 saa7134->mute_was_on = 1;
647                 dev->ctl_mute = 0;
648                 saa7134_tvaudio_setmute(dev);
649         }
650
651         err = snd_pcm_hw_constraint_integer(runtime,
652                                                 SNDRV_PCM_HW_PARAM_PERIODS);
653         if (err < 0)
654                 return err;
655
656         err = snd_pcm_hw_constraint_step(runtime, 0,
657                                                 SNDRV_PCM_HW_PARAM_PERIODS, 2);
658         if (err < 0)
659                 return err;
660
661         return 0;
662 }
663
664 /*
665  * page callback (needed for mmap)
666  */
667
668 static struct page *snd_card_saa7134_page(struct snd_pcm_substream *substream,
669                                         unsigned long offset)
670 {
671         void *pageptr = substream->runtime->dma_area + offset;
672         return vmalloc_to_page(pageptr);
673 }
674
675 /*
676  * ALSA capture callbacks definition
677  */
678
679 static struct snd_pcm_ops snd_card_saa7134_capture_ops = {
680         .open =                 snd_card_saa7134_capture_open,
681         .close =                snd_card_saa7134_capture_close,
682         .ioctl =                snd_pcm_lib_ioctl,
683         .hw_params =            snd_card_saa7134_hw_params,
684         .hw_free =              snd_card_saa7134_hw_free,
685         .prepare =              snd_card_saa7134_capture_prepare,
686         .trigger =              snd_card_saa7134_capture_trigger,
687         .pointer =              snd_card_saa7134_capture_pointer,
688         .page =                 snd_card_saa7134_page,
689 };
690
691 /*
692  * ALSA PCM setup
693  *
694  *   Called when initializing the board. Sets up the name and hooks up
695  *  the callbacks
696  *
697  */
698
699 static int snd_card_saa7134_pcm(snd_card_saa7134_t *saa7134, int device)
700 {
701         struct snd_pcm *pcm;
702         int err;
703
704         if ((err = snd_pcm_new(saa7134->card, "SAA7134 PCM", device, 0, 1, &pcm)) < 0)
705                 return err;
706         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_card_saa7134_capture_ops);
707         pcm->private_data = saa7134;
708         pcm->info_flags = 0;
709         strcpy(pcm->name, "SAA7134 PCM");
710         return 0;
711 }
712
713 #define SAA713x_VOLUME(xname, xindex, addr) \
714 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
715   .info = snd_saa7134_volume_info, \
716   .get = snd_saa7134_volume_get, .put = snd_saa7134_volume_put, \
717   .private_value = addr }
718
719 static int snd_saa7134_volume_info(struct snd_kcontrol * kcontrol,
720                                    struct snd_ctl_elem_info * uinfo)
721 {
722         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
723         uinfo->count = 2;
724         uinfo->value.integer.min = 0;
725         uinfo->value.integer.max = 20;
726         return 0;
727 }
728
729 static int snd_saa7134_volume_get(struct snd_kcontrol * kcontrol,
730                                   struct snd_ctl_elem_value * ucontrol)
731 {
732         snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
733         int addr = kcontrol->private_value;
734
735         ucontrol->value.integer.value[0] = chip->mixer_volume[addr][0];
736         ucontrol->value.integer.value[1] = chip->mixer_volume[addr][1];
737         return 0;
738 }
739
740 static int snd_saa7134_volume_put(struct snd_kcontrol * kcontrol,
741                                   struct snd_ctl_elem_value * ucontrol)
742 {
743         snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
744         struct saa7134_dev *dev = chip->dev;
745
746         int change, addr = kcontrol->private_value;
747         int left, right;
748
749         left = ucontrol->value.integer.value[0];
750         if (left < 0)
751                 left = 0;
752         if (left > 20)
753                 left = 20;
754         right = ucontrol->value.integer.value[1];
755         if (right < 0)
756                 right = 0;
757         if (right > 20)
758                 right = 20;
759         spin_lock_irq(&chip->mixer_lock);
760         change = 0;
761         if (chip->mixer_volume[addr][0] != left) {
762                 change = 1;
763                 right = left;
764         }
765         if (chip->mixer_volume[addr][1] != right) {
766                 change = 1;
767                 left = right;
768         }
769         if (change) {
770                 switch (dev->pci->device) {
771                         case PCI_DEVICE_ID_PHILIPS_SAA7134:
772                                 switch (addr) {
773                                         case MIXER_ADDR_TVTUNER:
774                                                 left = 20;
775                                                 break;
776                                         case MIXER_ADDR_LINE1:
777                                                 saa_andorb(SAA7134_ANALOG_IO_SELECT,  0x10,
778                                                            (left > 10) ? 0x00 : 0x10);
779                                                 break;
780                                         case MIXER_ADDR_LINE2:
781                                                 saa_andorb(SAA7134_ANALOG_IO_SELECT,  0x20,
782                                                            (left > 10) ? 0x00 : 0x20);
783                                                 break;
784                                 }
785                                 break;
786                         case PCI_DEVICE_ID_PHILIPS_SAA7133:
787                         case PCI_DEVICE_ID_PHILIPS_SAA7135:
788                                 switch (addr) {
789                                         case MIXER_ADDR_TVTUNER:
790                                                 left = 20;
791                                                 break;
792                                         case MIXER_ADDR_LINE1:
793                                                 saa_andorb(0x0594,  0x10,
794                                                            (left > 10) ? 0x00 : 0x10);
795                                                 break;
796                                         case MIXER_ADDR_LINE2:
797                                                 saa_andorb(0x0594,  0x20,
798                                                            (left > 10) ? 0x00 : 0x20);
799                                                 break;
800                                 }
801                                 break;
802                 }
803                 chip->mixer_volume[addr][0] = left;
804                 chip->mixer_volume[addr][1] = right;
805         }
806         spin_unlock_irq(&chip->mixer_lock);
807         return change;
808 }
809
810 #define SAA713x_CAPSRC(xname, xindex, addr) \
811 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
812   .info = snd_saa7134_capsrc_info, \
813   .get = snd_saa7134_capsrc_get, .put = snd_saa7134_capsrc_put, \
814   .private_value = addr }
815
816 static int snd_saa7134_capsrc_info(struct snd_kcontrol * kcontrol,
817                                    struct snd_ctl_elem_info * uinfo)
818 {
819         uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
820         uinfo->count = 2;
821         uinfo->value.integer.min = 0;
822         uinfo->value.integer.max = 1;
823         return 0;
824 }
825
826 static int snd_saa7134_capsrc_get(struct snd_kcontrol * kcontrol,
827                                   struct snd_ctl_elem_value * ucontrol)
828 {
829         snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
830         int addr = kcontrol->private_value;
831
832         spin_lock_irq(&chip->mixer_lock);
833         ucontrol->value.integer.value[0] = chip->capture_source[addr][0];
834         ucontrol->value.integer.value[1] = chip->capture_source[addr][1];
835         spin_unlock_irq(&chip->mixer_lock);
836
837         return 0;
838 }
839
840 static int snd_saa7134_capsrc_put(struct snd_kcontrol * kcontrol,
841                                   struct snd_ctl_elem_value * ucontrol)
842 {
843         snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
844         int change, addr = kcontrol->private_value;
845         int left, right;
846         u32 anabar, xbarin;
847         int analog_io, rate;
848         struct saa7134_dev *dev;
849
850         dev = chip->dev;
851
852         left = ucontrol->value.integer.value[0] & 1;
853         right = ucontrol->value.integer.value[1] & 1;
854         spin_lock_irq(&chip->mixer_lock);
855
856         change = chip->capture_source[addr][0] != left ||
857                  chip->capture_source[addr][1] != right;
858         chip->capture_source[addr][0] = left;
859         chip->capture_source[addr][1] = right;
860         dev->dmasound.input=addr;
861         spin_unlock_irq(&chip->mixer_lock);
862
863
864         if (change) {
865           switch (dev->pci->device) {
866
867            case PCI_DEVICE_ID_PHILIPS_SAA7134:
868                 switch (addr) {
869                         case MIXER_ADDR_TVTUNER:
870                                 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0xc0);
871                                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, 0x00);
872                                 break;
873                         case MIXER_ADDR_LINE1:
874                         case MIXER_ADDR_LINE2:
875                                 analog_io = (MIXER_ADDR_LINE1 == addr) ? 0x00 : 0x08;
876                                 rate = (32000 == dev->dmasound.rate) ? 0x01 : 0x03;
877                                 saa_andorb(SAA7134_ANALOG_IO_SELECT,  0x08, analog_io);
878                                 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0x80);
879                                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, rate);
880                                 break;
881                 }
882
883                 break;
884            case PCI_DEVICE_ID_PHILIPS_SAA7133:
885            case PCI_DEVICE_ID_PHILIPS_SAA7135:
886                 xbarin = 0x03; // adc
887                 anabar = 0;
888                 switch (addr) {
889                         case MIXER_ADDR_TVTUNER:
890                                 xbarin = 0; // Demodulator
891                                 anabar = 2; // DACs
892                                 break;
893                         case MIXER_ADDR_LINE1:
894                                 anabar = 0;  // aux1, aux1
895                                 break;
896                         case MIXER_ADDR_LINE2:
897                                 anabar = 9;  // aux2, aux2
898                                 break;
899                 }
900
901                 /* output xbar always main channel */
902                 saa_dsp_writel(dev, SAA7133_DIGITAL_OUTPUT_SEL1, 0xbbbb10);
903
904                 if (left || right) { // We've got data, turn the input on
905                   saa_dsp_writel(dev, SAA7133_DIGITAL_INPUT_XBAR1, xbarin);
906                   saa_writel(SAA7133_ANALOG_IO_SELECT, anabar);
907                 } else {
908                   saa_dsp_writel(dev, SAA7133_DIGITAL_INPUT_XBAR1, 0);
909                   saa_writel(SAA7133_ANALOG_IO_SELECT, 0);
910                 }
911                 break;
912           }
913         }
914
915         return change;
916 }
917
918 static struct snd_kcontrol_new snd_saa7134_controls[] = {
919 SAA713x_VOLUME("Video Volume", 0, MIXER_ADDR_TVTUNER),
920 SAA713x_CAPSRC("Video Capture Switch", 0, MIXER_ADDR_TVTUNER),
921 SAA713x_VOLUME("Line Volume", 1, MIXER_ADDR_LINE1),
922 SAA713x_CAPSRC("Line Capture Switch", 1, MIXER_ADDR_LINE1),
923 SAA713x_VOLUME("Line Volume", 2, MIXER_ADDR_LINE2),
924 SAA713x_CAPSRC("Line Capture Switch", 2, MIXER_ADDR_LINE2),
925 };
926
927 /*
928  * ALSA mixer setup
929  *
930  *   Called when initializing the board. Sets up the name and hooks up
931  *  the callbacks
932  *
933  */
934
935 static int snd_card_saa7134_new_mixer(snd_card_saa7134_t * chip)
936 {
937         struct snd_card *card = chip->card;
938         unsigned int idx;
939         int err;
940
941         snd_assert(chip != NULL, return -EINVAL);
942         strcpy(card->mixername, "SAA7134 Mixer");
943
944         for (idx = 0; idx < ARRAY_SIZE(snd_saa7134_controls); idx++) {
945                 if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_saa7134_controls[idx], chip))) < 0)
946                         return err;
947         }
948         return 0;
949 }
950
951 static void snd_saa7134_free(struct snd_card * card)
952 {
953         snd_card_saa7134_t *chip = card->private_data;
954
955         if (chip->dev->dmasound.priv_data == NULL)
956                 return;
957
958         if (chip->irq >= 0) {
959                 synchronize_irq(chip->irq);
960                 free_irq(chip->irq, &chip->dev->dmasound);
961         }
962
963         chip->dev->dmasound.priv_data = NULL;
964
965 }
966
967 /*
968  * ALSA initialization
969  *
970  *   Called by the init routine, once for each saa7134 device present,
971  *  it creates the basic structures and registers the ALSA devices
972  *
973  */
974
975 static int alsa_card_saa7134_create(struct saa7134_dev *dev, int devnum)
976 {
977
978         struct snd_card *card;
979         snd_card_saa7134_t *chip;
980         int err;
981
982
983         if (devnum >= SNDRV_CARDS)
984                 return -ENODEV;
985         if (!enable[devnum])
986                 return -ENODEV;
987
988         card = snd_card_new(index[devnum], id[devnum], THIS_MODULE, sizeof(snd_card_saa7134_t));
989
990         if (card == NULL)
991                 return -ENOMEM;
992
993         strcpy(card->driver, "SAA7134");
994
995         /* Card "creation" */
996
997         card->private_free = snd_saa7134_free;
998         chip = (snd_card_saa7134_t *) card->private_data;
999
1000         spin_lock_init(&chip->lock);
1001         spin_lock_init(&chip->mixer_lock);
1002
1003         chip->dev = dev;
1004
1005         chip->card = card;
1006
1007         chip->pci = dev->pci;
1008         chip->iobase = pci_resource_start(dev->pci, 0);
1009
1010
1011         err = request_irq(dev->pci->irq, saa7134_alsa_irq,
1012                                 IRQF_SHARED | IRQF_DISABLED, dev->name,
1013                                 (void*) &dev->dmasound);
1014
1015         if (err < 0) {
1016                 printk(KERN_ERR "%s: can't get IRQ %d for ALSA\n",
1017                         dev->name, dev->pci->irq);
1018                 goto __nodev;
1019         }
1020
1021         chip->irq = dev->pci->irq;
1022
1023         mutex_init(&dev->dmasound.lock);
1024
1025         if ((err = snd_card_saa7134_new_mixer(chip)) < 0)
1026                 goto __nodev;
1027
1028         if ((err = snd_card_saa7134_pcm(chip, 0)) < 0)
1029                 goto __nodev;
1030
1031         snd_card_set_dev(card, &chip->pci->dev);
1032
1033         /* End of "creation" */
1034
1035         strcpy(card->shortname, "SAA7134");
1036         sprintf(card->longname, "%s at 0x%lx irq %d",
1037                 chip->dev->name, chip->iobase, chip->irq);
1038
1039         printk(KERN_INFO "%s/alsa: %s registered as card %d\n",dev->name,card->longname,index[devnum]);
1040
1041         if ((err = snd_card_register(card)) == 0) {
1042                 snd_saa7134_cards[devnum] = card;
1043                 return 0;
1044         }
1045
1046 __nodev:
1047         snd_card_free(card);
1048         return err;
1049 }
1050
1051
1052 static int alsa_device_init(struct saa7134_dev *dev)
1053 {
1054         dev->dmasound.priv_data = dev;
1055         alsa_card_saa7134_create(dev,dev->nr);
1056         return 1;
1057 }
1058
1059 static int alsa_device_exit(struct saa7134_dev *dev)
1060 {
1061
1062         snd_card_free(snd_saa7134_cards[dev->nr]);
1063         snd_saa7134_cards[dev->nr] = NULL;
1064         return 1;
1065 }
1066
1067 /*
1068  * Module initializer
1069  *
1070  * Loops through present saa7134 cards, and assigns an ALSA device
1071  * to each one
1072  *
1073  */
1074
1075 static int saa7134_alsa_init(void)
1076 {
1077         struct saa7134_dev *dev = NULL;
1078         struct list_head *list;
1079
1080         saa7134_dmasound_init = alsa_device_init;
1081         saa7134_dmasound_exit = alsa_device_exit;
1082
1083         printk(KERN_INFO "saa7134 ALSA driver for DMA sound loaded\n");
1084
1085         list_for_each(list,&saa7134_devlist) {
1086                 dev = list_entry(list, struct saa7134_dev, devlist);
1087                 alsa_device_init(dev);
1088         }
1089
1090         if (dev == NULL)
1091                 printk(KERN_INFO "saa7134 ALSA: no saa7134 cards found\n");
1092
1093         return 0;
1094
1095 }
1096
1097 /*
1098  * Module destructor
1099  */
1100
1101 static void saa7134_alsa_exit(void)
1102 {
1103         int idx;
1104
1105         for (idx = 0; idx < SNDRV_CARDS; idx++) {
1106                 snd_card_free(snd_saa7134_cards[idx]);
1107         }
1108
1109         saa7134_dmasound_init = NULL;
1110         saa7134_dmasound_exit = NULL;
1111         printk(KERN_INFO "saa7134 ALSA driver for DMA sound unloaded\n");
1112
1113         return;
1114 }
1115
1116 /* We initialize this late, to make sure the sound system is up and running */
1117 late_initcall(saa7134_alsa_init);
1118 module_exit(saa7134_alsa_exit);
1119 MODULE_LICENSE("GPL");
1120 MODULE_AUTHOR("Ricardo Cerqueira");
1121
1122
1123