Merge branch 'master' of ssh://master.kernel.org/pub/scm/linux/kernel/git/mchehab...
[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/moduleparam.h>
24 #include <linux/module.h>
25 #include <sound/driver.h>
26 #include <sound/core.h>
27 #include <sound/control.h>
28 #include <sound/pcm.h>
29 #include <sound/pcm_params.h>
30 #include <sound/initval.h>
31 #include <linux/interrupt.h>
32
33 #include "saa7134.h"
34 #include "saa7134-reg.h"
35
36 static unsigned int debug  = 0;
37 module_param(debug, int, 0644);
38 MODULE_PARM_DESC(debug,"enable debug messages [alsa]");
39
40 /*
41  * Configuration macros
42  */
43
44 /* defaults */
45 #define MIXER_ADDR_TVTUNER      0
46 #define MIXER_ADDR_LINE1        1
47 #define MIXER_ADDR_LINE2        2
48 #define MIXER_ADDR_LAST         2
49
50
51 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
52 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
53 static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 1};
54
55 module_param_array(index, int, NULL, 0444);
56 module_param_array(enable, int, NULL, 0444);
57 MODULE_PARM_DESC(index, "Index value for SAA7134 capture interface(s).");
58 MODULE_PARM_DESC(enable, "Enable (or not) the SAA7134 capture interface(s).");
59
60 #define dprintk(fmt, arg...)    if (debug) \
61         printk(KERN_DEBUG "%s/alsa: " fmt, dev->name , ##arg)
62
63
64
65 /*
66  * Main chip structure
67  */
68
69 typedef struct snd_card_saa7134 {
70         struct snd_card *card;
71         spinlock_t mixer_lock;
72         int mixer_volume[MIXER_ADDR_LAST+1][2];
73         int capture_source[MIXER_ADDR_LAST+1][2];
74         struct pci_dev *pci;
75         struct saa7134_dev *dev;
76
77         unsigned long iobase;
78         s16 irq;
79         u16 mute_was_on;
80
81         spinlock_t lock;
82 } snd_card_saa7134_t;
83
84
85
86 /*
87  * PCM structure
88  */
89
90 typedef struct snd_card_saa7134_pcm {
91         struct saa7134_dev *dev;
92
93         spinlock_t lock;
94
95         struct snd_pcm_substream *substream;
96 } snd_card_saa7134_pcm_t;
97
98 static struct snd_card *snd_saa7134_cards[SNDRV_CARDS];
99
100
101 /*
102  * saa7134 DMA audio stop
103  *
104  *   Called when the capture device is released or the buffer overflows
105  *
106  *   - Copied verbatim from saa7134-oss's dsp_dma_stop.
107  *
108  */
109
110 static void saa7134_dma_stop(struct saa7134_dev *dev)
111 {
112         dev->dmasound.dma_blk     = -1;
113         dev->dmasound.dma_running = 0;
114         saa7134_set_dmabits(dev);
115 }
116
117 /*
118  * saa7134 DMA audio start
119  *
120  *   Called when preparing the capture device for use
121  *
122  *   - Copied verbatim from saa7134-oss's dsp_dma_start.
123  *
124  */
125
126 static void saa7134_dma_start(struct saa7134_dev *dev)
127 {
128         dev->dmasound.dma_blk     = 0;
129         dev->dmasound.dma_running = 1;
130         saa7134_set_dmabits(dev);
131 }
132
133 /*
134  * saa7134 audio DMA IRQ handler
135  *
136  *   Called whenever we get an SAA7134_IRQ_REPORT_DONE_RA3 interrupt
137  *   Handles shifting between the 2 buffers, manages the read counters,
138  *  and notifies ALSA when periods elapse
139  *
140  *   - Mostly copied from saa7134-oss's saa7134_irq_oss_done.
141  *
142  */
143
144 static void saa7134_irq_alsa_done(struct saa7134_dev *dev,
145                                   unsigned long status)
146 {
147         int next_blk, reg = 0;
148
149         spin_lock(&dev->slock);
150         if (UNSET == dev->dmasound.dma_blk) {
151                 dprintk("irq: recording stopped\n");
152                 goto done;
153         }
154         if (0 != (status & 0x0f000000))
155                 dprintk("irq: lost %ld\n", (status >> 24) & 0x0f);
156         if (0 == (status & 0x10000000)) {
157                 /* odd */
158                 if (0 == (dev->dmasound.dma_blk & 0x01))
159                         reg = SAA7134_RS_BA1(6);
160         } else {
161                 /* even */
162                 if (1 == (dev->dmasound.dma_blk & 0x01))
163                         reg = SAA7134_RS_BA2(6);
164         }
165         if (0 == reg) {
166                 dprintk("irq: field oops [%s]\n",
167                         (status & 0x10000000) ? "even" : "odd");
168                 goto done;
169         }
170
171         if (dev->dmasound.read_count >= dev->dmasound.blksize * (dev->dmasound.blocks-2)) {
172                 dprintk("irq: overrun [full=%d/%d] - Blocks in %d\n",dev->dmasound.read_count,
173                         dev->dmasound.bufsize, dev->dmasound.blocks);
174                 spin_unlock(&dev->slock);
175                 snd_pcm_stop(dev->dmasound.substream,SNDRV_PCM_STATE_XRUN);
176                 return;
177         }
178
179         /* next block addr */
180         next_blk = (dev->dmasound.dma_blk + 2) % dev->dmasound.blocks;
181         saa_writel(reg,next_blk * dev->dmasound.blksize);
182         if (debug > 2)
183                 dprintk("irq: ok, %s, next_blk=%d, addr=%x, blocks=%u, size=%u, read=%u\n",
184                         (status & 0x10000000) ? "even" : "odd ", next_blk,
185                         next_blk * dev->dmasound.blksize, dev->dmasound.blocks, dev->dmasound.blksize, dev->dmasound.read_count);
186
187         /* update status & wake waiting readers */
188         dev->dmasound.dma_blk = (dev->dmasound.dma_blk + 1) % dev->dmasound.blocks;
189         dev->dmasound.read_count += dev->dmasound.blksize;
190
191         dev->dmasound.recording_on = reg;
192
193         if (dev->dmasound.read_count >= snd_pcm_lib_period_bytes(dev->dmasound.substream)) {
194                 spin_unlock(&dev->slock);
195                 snd_pcm_period_elapsed(dev->dmasound.substream);
196                 spin_lock(&dev->slock);
197         }
198
199  done:
200         spin_unlock(&dev->slock);
201
202 }
203
204 /*
205  * IRQ request handler
206  *
207  *   Runs along with saa7134's IRQ handler, discards anything that isn't
208  *   DMA sound
209  *
210  */
211
212 static irqreturn_t saa7134_alsa_irq(int irq, void *dev_id)
213 {
214         struct saa7134_dmasound *dmasound = dev_id;
215         struct saa7134_dev *dev = dmasound->priv_data;
216
217         unsigned long report, status;
218         int loop, handled = 0;
219
220         for (loop = 0; loop < 10; loop++) {
221                 report = saa_readl(SAA7134_IRQ_REPORT);
222                 status = saa_readl(SAA7134_IRQ_STATUS);
223
224                 if (report & SAA7134_IRQ_REPORT_DONE_RA3) {
225                         handled = 1;
226                         saa_writel(SAA7134_IRQ_REPORT,report);
227                         saa7134_irq_alsa_done(dev, status);
228                 } else {
229                         goto out;
230                 }
231         }
232
233         if (loop == 10) {
234                 dprintk("error! looping IRQ!");
235         }
236
237 out:
238         return IRQ_RETVAL(handled);
239 }
240
241 /*
242  * ALSA capture trigger
243  *
244  *   - One of the ALSA capture callbacks.
245  *
246  *   Called whenever a capture is started or stopped. Must be defined,
247  *   but there's nothing we want to do here
248  *
249  */
250
251 static int snd_card_saa7134_capture_trigger(struct snd_pcm_substream * substream,
252                                           int cmd)
253 {
254         struct snd_pcm_runtime *runtime = substream->runtime;
255         snd_card_saa7134_pcm_t *pcm = runtime->private_data;
256         struct saa7134_dev *dev=pcm->dev;
257         int err = 0;
258
259         spin_lock(&dev->slock);
260         if (cmd == SNDRV_PCM_TRIGGER_START) {
261                 /* start dma */
262                 saa7134_dma_start(dev);
263         } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
264                 /* stop dma */
265                 saa7134_dma_stop(dev);
266         } else {
267                 err = -EINVAL;
268         }
269         spin_unlock(&dev->slock);
270
271         return err;
272 }
273
274 /*
275  * DMA buffer initialization
276  *
277  *   Uses V4L functions to initialize the DMA. Shouldn't be necessary in
278  *  ALSA, but I was unable to use ALSA's own DMA, and had to force the
279  *  usage of V4L's
280  *
281  *   - Copied verbatim from saa7134-oss.
282  *
283  */
284
285 static int dsp_buffer_init(struct saa7134_dev *dev)
286 {
287         int err;
288
289         BUG_ON(!dev->dmasound.bufsize);
290
291         videobuf_dma_init(&dev->dmasound.dma);
292         err = videobuf_dma_init_kernel(&dev->dmasound.dma, PCI_DMA_FROMDEVICE,
293                                        (dev->dmasound.bufsize + PAGE_SIZE) >> PAGE_SHIFT);
294         if (0 != err)
295                 return err;
296         return 0;
297 }
298
299 /*
300  * DMA buffer release
301  *
302  *   Called after closing the device, during snd_card_saa7134_capture_close
303  *
304  */
305
306 static int dsp_buffer_free(struct saa7134_dev *dev)
307 {
308         BUG_ON(!dev->dmasound.blksize);
309
310         videobuf_dma_free(&dev->dmasound.dma);
311
312         dev->dmasound.blocks  = 0;
313         dev->dmasound.blksize = 0;
314         dev->dmasound.bufsize = 0;
315
316        return 0;
317 }
318
319
320 /*
321  * ALSA PCM preparation
322  *
323  *   - One of the ALSA capture callbacks.
324  *
325  *   Called right after the capture device is opened, this function configures
326  *  the buffer using the previously defined functions, allocates the memory,
327  *  sets up the hardware registers, and then starts the DMA. When this function
328  *  returns, the audio should be flowing.
329  *
330  */
331
332 static int snd_card_saa7134_capture_prepare(struct snd_pcm_substream * substream)
333 {
334         struct snd_pcm_runtime *runtime = substream->runtime;
335         int bswap, sign;
336         u32 fmt, control;
337         snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
338         struct saa7134_dev *dev;
339         snd_card_saa7134_pcm_t *pcm = runtime->private_data;
340
341         pcm->dev->dmasound.substream = substream;
342
343         dev = saa7134->dev;
344
345         if (snd_pcm_format_width(runtime->format) == 8)
346                 fmt = 0x00;
347         else
348                 fmt = 0x01;
349
350         if (snd_pcm_format_signed(runtime->format))
351                 sign = 1;
352         else
353                 sign = 0;
354
355         if (snd_pcm_format_big_endian(runtime->format))
356                 bswap = 1;
357         else
358                 bswap = 0;
359
360         switch (dev->pci->device) {
361           case PCI_DEVICE_ID_PHILIPS_SAA7134:
362                 if (1 == runtime->channels)
363                         fmt |= (1 << 3);
364                 if (2 == runtime->channels)
365                         fmt |= (3 << 3);
366                 if (sign)
367                         fmt |= 0x04;
368
369                 fmt |= (MIXER_ADDR_TVTUNER == dev->dmasound.input) ? 0xc0 : 0x80;
370                 saa_writeb(SAA7134_NUM_SAMPLES0, ((dev->dmasound.blksize - 1) & 0x0000ff));
371                 saa_writeb(SAA7134_NUM_SAMPLES1, ((dev->dmasound.blksize - 1) & 0x00ff00) >>  8);
372                 saa_writeb(SAA7134_NUM_SAMPLES2, ((dev->dmasound.blksize - 1) & 0xff0000) >> 16);
373                 saa_writeb(SAA7134_AUDIO_FORMAT_CTRL, fmt);
374
375                 break;
376           case PCI_DEVICE_ID_PHILIPS_SAA7133:
377           case PCI_DEVICE_ID_PHILIPS_SAA7135:
378                 if (1 == runtime->channels)
379                         fmt |= (1 << 4);
380                 if (2 == runtime->channels)
381                         fmt |= (2 << 4);
382                 if (!sign)
383                         fmt |= 0x04;
384                 saa_writel(SAA7133_NUM_SAMPLES, dev->dmasound.blksize -1);
385                 saa_writel(SAA7133_AUDIO_CHANNEL, 0x543210 | (fmt << 24));
386                 break;
387         }
388
389         dprintk("rec_start: afmt=%d ch=%d  =>  fmt=0x%x swap=%c\n",
390                 runtime->format, runtime->channels, fmt,
391                 bswap ? 'b' : '-');
392         /* dma: setup channel 6 (= AUDIO) */
393         control = SAA7134_RS_CONTROL_BURST_16 |
394                 SAA7134_RS_CONTROL_ME |
395                 (dev->dmasound.pt.dma >> 12);
396         if (bswap)
397                 control |= SAA7134_RS_CONTROL_BSWAP;
398
399         saa_writel(SAA7134_RS_BA1(6),0);
400         saa_writel(SAA7134_RS_BA2(6),dev->dmasound.blksize);
401         saa_writel(SAA7134_RS_PITCH(6),0);
402         saa_writel(SAA7134_RS_CONTROL(6),control);
403
404         dev->dmasound.rate = runtime->rate;
405
406         return 0;
407
408 }
409
410 /*
411  * ALSA pointer fetching
412  *
413  *   - One of the ALSA capture callbacks.
414  *
415  *   Called whenever a period elapses, it must return the current hardware
416  *  position of the buffer.
417  *   Also resets the read counter used to prevent overruns
418  *
419  */
420
421 static snd_pcm_uframes_t
422 snd_card_saa7134_capture_pointer(struct snd_pcm_substream * substream)
423 {
424         struct snd_pcm_runtime *runtime = substream->runtime;
425         snd_card_saa7134_pcm_t *pcm = runtime->private_data;
426         struct saa7134_dev *dev=pcm->dev;
427
428         if (dev->dmasound.read_count) {
429                 dev->dmasound.read_count  -= snd_pcm_lib_period_bytes(substream);
430                 dev->dmasound.read_offset += snd_pcm_lib_period_bytes(substream);
431                 if (dev->dmasound.read_offset == dev->dmasound.bufsize)
432                         dev->dmasound.read_offset = 0;
433         }
434
435         return bytes_to_frames(runtime, dev->dmasound.read_offset);
436 }
437
438 /*
439  * ALSA hardware capabilities definition
440  */
441
442 static struct snd_pcm_hardware snd_card_saa7134_capture =
443 {
444         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
445                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
446                                  SNDRV_PCM_INFO_MMAP_VALID),
447         .formats =              SNDRV_PCM_FMTBIT_S16_LE | \
448                                 SNDRV_PCM_FMTBIT_S16_BE | \
449                                 SNDRV_PCM_FMTBIT_S8 | \
450                                 SNDRV_PCM_FMTBIT_U8 | \
451                                 SNDRV_PCM_FMTBIT_U16_LE | \
452                                 SNDRV_PCM_FMTBIT_U16_BE,
453         .rates =                SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_48000,
454         .rate_min =             32000,
455         .rate_max =             48000,
456         .channels_min =         1,
457         .channels_max =         2,
458         .buffer_bytes_max =     (256*1024),
459         .period_bytes_min =     64,
460         .period_bytes_max =     (256*1024),
461         .periods_min =          2,
462         .periods_max =          1024,
463 };
464
465 static void snd_card_saa7134_runtime_free(struct snd_pcm_runtime *runtime)
466 {
467         snd_card_saa7134_pcm_t *pcm = runtime->private_data;
468
469         kfree(pcm);
470 }
471
472
473 /*
474  * ALSA hardware params
475  *
476  *   - One of the ALSA capture callbacks.
477  *
478  *   Called on initialization, right before the PCM preparation
479  *
480  */
481
482 static int snd_card_saa7134_hw_params(struct snd_pcm_substream * substream,
483                                       struct snd_pcm_hw_params * hw_params)
484 {
485         snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
486         struct saa7134_dev *dev;
487         unsigned int period_size, periods;
488         int err;
489
490         period_size = params_period_bytes(hw_params);
491         periods = params_periods(hw_params);
492
493         snd_assert(period_size >= 0x100 && period_size <= 0x10000,
494                    return -EINVAL);
495         snd_assert(periods >= 2, return -EINVAL);
496         snd_assert(period_size * periods <= 1024 * 1024, return -EINVAL);
497
498         dev = saa7134->dev;
499
500         if (dev->dmasound.blocks == periods &&
501             dev->dmasound.blksize == period_size)
502                 return 0;
503
504         /* release the old buffer */
505         if (substream->runtime->dma_area) {
506                 saa7134_pgtable_free(dev->pci, &dev->dmasound.pt);
507                 videobuf_pci_dma_unmap(dev->pci, &dev->dmasound.dma);
508                 dsp_buffer_free(dev);
509                 substream->runtime->dma_area = NULL;
510         }
511         dev->dmasound.blocks  = periods;
512         dev->dmasound.blksize = period_size;
513         dev->dmasound.bufsize = period_size * periods;
514
515         err = dsp_buffer_init(dev);
516         if (0 != err) {
517                 dev->dmasound.blocks  = 0;
518                 dev->dmasound.blksize = 0;
519                 dev->dmasound.bufsize = 0;
520                 return err;
521         }
522
523         if (0 != (err = videobuf_pci_dma_map(dev->pci, &dev->dmasound.dma))) {
524                 dsp_buffer_free(dev);
525                 return err;
526         }
527         if (0 != (err = saa7134_pgtable_alloc(dev->pci,&dev->dmasound.pt))) {
528                 videobuf_pci_dma_unmap(dev->pci, &dev->dmasound.dma);
529                 dsp_buffer_free(dev);
530                 return err;
531         }
532         if (0 != (err = saa7134_pgtable_build(dev->pci,&dev->dmasound.pt,
533                                                 dev->dmasound.dma.sglist,
534                                                 dev->dmasound.dma.sglen,
535                                                 0))) {
536                 saa7134_pgtable_free(dev->pci, &dev->dmasound.pt);
537                 videobuf_pci_dma_unmap(dev->pci, &dev->dmasound.dma);
538                 dsp_buffer_free(dev);
539                 return err;
540         }
541
542         /* I should be able to use runtime->dma_addr in the control
543            byte, but it doesn't work. So I allocate the DMA using the
544            V4L functions, and force ALSA to use that as the DMA area */
545
546         substream->runtime->dma_area = dev->dmasound.dma.vmalloc;
547
548         return 1;
549
550 }
551
552 /*
553  * ALSA hardware release
554  *
555  *   - One of the ALSA capture callbacks.
556  *
557  *   Called after closing the device, but before snd_card_saa7134_capture_close
558  *   It stops the DMA audio and releases the buffers.
559  *
560  */
561
562 static int snd_card_saa7134_hw_free(struct snd_pcm_substream * substream)
563 {
564         snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
565         struct saa7134_dev *dev;
566
567         dev = saa7134->dev;
568
569         if (substream->runtime->dma_area) {
570                 saa7134_pgtable_free(dev->pci, &dev->dmasound.pt);
571                 videobuf_pci_dma_unmap(dev->pci, &dev->dmasound.dma);
572                 dsp_buffer_free(dev);
573                 substream->runtime->dma_area = NULL;
574         }
575
576         return 0;
577 }
578
579 /*
580  * ALSA capture finish
581  *
582  *   - One of the ALSA capture callbacks.
583  *
584  *   Called after closing the device.
585  *
586  */
587
588 static int snd_card_saa7134_capture_close(struct snd_pcm_substream * substream)
589 {
590         snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
591         struct saa7134_dev *dev = saa7134->dev;
592
593         if (saa7134->mute_was_on) {
594                 dev->ctl_mute = 1;
595                 saa7134_tvaudio_setmute(dev);
596         }
597         return 0;
598 }
599
600 /*
601  * ALSA capture start
602  *
603  *   - One of the ALSA capture callbacks.
604  *
605  *   Called when opening the device. It creates and populates the PCM
606  *  structure
607  *
608  */
609
610 static int snd_card_saa7134_capture_open(struct snd_pcm_substream * substream)
611 {
612         struct snd_pcm_runtime *runtime = substream->runtime;
613         snd_card_saa7134_pcm_t *pcm;
614         snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
615         struct saa7134_dev *dev = saa7134->dev;
616         int amux, err;
617
618         mutex_lock(&dev->dmasound.lock);
619
620         dev->dmasound.read_count  = 0;
621         dev->dmasound.read_offset = 0;
622
623         amux = dev->input->amux;
624         if ((amux < 1) || (amux > 3))
625                 amux = 1;
626         dev->dmasound.input  =  amux - 1;
627
628         mutex_unlock(&dev->dmasound.lock);
629
630         pcm = kzalloc(sizeof(*pcm), GFP_KERNEL);
631         if (pcm == NULL)
632                 return -ENOMEM;
633
634         pcm->dev=saa7134->dev;
635
636         spin_lock_init(&pcm->lock);
637
638         pcm->substream = substream;
639         runtime->private_data = pcm;
640         runtime->private_free = snd_card_saa7134_runtime_free;
641         runtime->hw = snd_card_saa7134_capture;
642
643         if (dev->ctl_mute != 0) {
644                 saa7134->mute_was_on = 1;
645                 dev->ctl_mute = 0;
646                 saa7134_tvaudio_setmute(dev);
647         }
648
649         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
650                 return err;
651
652         return 0;
653 }
654
655 /*
656  * ALSA capture callbacks definition
657  */
658
659 static struct snd_pcm_ops snd_card_saa7134_capture_ops = {
660         .open =                 snd_card_saa7134_capture_open,
661         .close =                snd_card_saa7134_capture_close,
662         .ioctl =                snd_pcm_lib_ioctl,
663         .hw_params =            snd_card_saa7134_hw_params,
664         .hw_free =              snd_card_saa7134_hw_free,
665         .prepare =              snd_card_saa7134_capture_prepare,
666         .trigger =              snd_card_saa7134_capture_trigger,
667         .pointer =              snd_card_saa7134_capture_pointer,
668 };
669
670 /*
671  * ALSA PCM setup
672  *
673  *   Called when initializing the board. Sets up the name and hooks up
674  *  the callbacks
675  *
676  */
677
678 static int snd_card_saa7134_pcm(snd_card_saa7134_t *saa7134, int device)
679 {
680         struct snd_pcm *pcm;
681         int err;
682
683         if ((err = snd_pcm_new(saa7134->card, "SAA7134 PCM", device, 0, 1, &pcm)) < 0)
684                 return err;
685         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_card_saa7134_capture_ops);
686         pcm->private_data = saa7134;
687         pcm->info_flags = 0;
688         strcpy(pcm->name, "SAA7134 PCM");
689         return 0;
690 }
691
692 #define SAA713x_VOLUME(xname, xindex, addr) \
693 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
694   .info = snd_saa7134_volume_info, \
695   .get = snd_saa7134_volume_get, .put = snd_saa7134_volume_put, \
696   .private_value = addr }
697
698 static int snd_saa7134_volume_info(struct snd_kcontrol * kcontrol,
699                                    struct snd_ctl_elem_info * uinfo)
700 {
701         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
702         uinfo->count = 2;
703         uinfo->value.integer.min = 0;
704         uinfo->value.integer.max = 20;
705         return 0;
706 }
707
708 static int snd_saa7134_volume_get(struct snd_kcontrol * kcontrol,
709                                   struct snd_ctl_elem_value * ucontrol)
710 {
711         snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
712         int addr = kcontrol->private_value;
713
714         ucontrol->value.integer.value[0] = chip->mixer_volume[addr][0];
715         ucontrol->value.integer.value[1] = chip->mixer_volume[addr][1];
716         return 0;
717 }
718
719 static int snd_saa7134_volume_put(struct snd_kcontrol * kcontrol,
720                                   struct snd_ctl_elem_value * ucontrol)
721 {
722         snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
723         struct saa7134_dev *dev = chip->dev;
724
725         int change, addr = kcontrol->private_value;
726         int left, right;
727
728         left = ucontrol->value.integer.value[0];
729         if (left < 0)
730                 left = 0;
731         if (left > 20)
732                 left = 20;
733         right = ucontrol->value.integer.value[1];
734         if (right < 0)
735                 right = 0;
736         if (right > 20)
737                 right = 20;
738         spin_lock_irq(&chip->mixer_lock);
739         change = 0;
740         if (chip->mixer_volume[addr][0] != left) {
741                 change = 1;
742                 right = left;
743         }
744         if (chip->mixer_volume[addr][1] != right) {
745                 change = 1;
746                 left = right;
747         }
748         if (change) {
749                 switch (dev->pci->device) {
750                         case PCI_DEVICE_ID_PHILIPS_SAA7134:
751                                 switch (addr) {
752                                         case MIXER_ADDR_TVTUNER:
753                                                 left = 20;
754                                                 break;
755                                         case MIXER_ADDR_LINE1:
756                                                 saa_andorb(SAA7134_ANALOG_IO_SELECT,  0x10,
757                                                            (left > 10) ? 0x00 : 0x10);
758                                                 break;
759                                         case MIXER_ADDR_LINE2:
760                                                 saa_andorb(SAA7134_ANALOG_IO_SELECT,  0x20,
761                                                            (left > 10) ? 0x00 : 0x20);
762                                                 break;
763                                 }
764                                 break;
765                         case PCI_DEVICE_ID_PHILIPS_SAA7133:
766                         case PCI_DEVICE_ID_PHILIPS_SAA7135:
767                                 switch (addr) {
768                                         case MIXER_ADDR_TVTUNER:
769                                                 left = 20;
770                                                 break;
771                                         case MIXER_ADDR_LINE1:
772                                                 saa_andorb(0x0594,  0x10,
773                                                            (left > 10) ? 0x00 : 0x10);
774                                                 break;
775                                         case MIXER_ADDR_LINE2:
776                                                 saa_andorb(0x0594,  0x20,
777                                                            (left > 10) ? 0x00 : 0x20);
778                                                 break;
779                                 }
780                                 break;
781                 }
782                 chip->mixer_volume[addr][0] = left;
783                 chip->mixer_volume[addr][1] = right;
784         }
785         spin_unlock_irq(&chip->mixer_lock);
786         return change;
787 }
788
789 #define SAA713x_CAPSRC(xname, xindex, addr) \
790 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
791   .info = snd_saa7134_capsrc_info, \
792   .get = snd_saa7134_capsrc_get, .put = snd_saa7134_capsrc_put, \
793   .private_value = addr }
794
795 static int snd_saa7134_capsrc_info(struct snd_kcontrol * kcontrol,
796                                    struct snd_ctl_elem_info * uinfo)
797 {
798         uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
799         uinfo->count = 2;
800         uinfo->value.integer.min = 0;
801         uinfo->value.integer.max = 1;
802         return 0;
803 }
804
805 static int snd_saa7134_capsrc_get(struct snd_kcontrol * kcontrol,
806                                   struct snd_ctl_elem_value * ucontrol)
807 {
808         snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
809         int addr = kcontrol->private_value;
810
811         spin_lock_irq(&chip->mixer_lock);
812         ucontrol->value.integer.value[0] = chip->capture_source[addr][0];
813         ucontrol->value.integer.value[1] = chip->capture_source[addr][1];
814         spin_unlock_irq(&chip->mixer_lock);
815
816         return 0;
817 }
818
819 static int snd_saa7134_capsrc_put(struct snd_kcontrol * kcontrol,
820                                   struct snd_ctl_elem_value * ucontrol)
821 {
822         snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
823         int change, addr = kcontrol->private_value;
824         int left, right;
825         u32 anabar, xbarin;
826         int analog_io, rate;
827         struct saa7134_dev *dev;
828
829         dev = chip->dev;
830
831         left = ucontrol->value.integer.value[0] & 1;
832         right = ucontrol->value.integer.value[1] & 1;
833         spin_lock_irq(&chip->mixer_lock);
834
835         change = chip->capture_source[addr][0] != left ||
836                  chip->capture_source[addr][1] != right;
837         chip->capture_source[addr][0] = left;
838         chip->capture_source[addr][1] = right;
839         dev->dmasound.input=addr;
840         spin_unlock_irq(&chip->mixer_lock);
841
842
843         if (change) {
844           switch (dev->pci->device) {
845
846            case PCI_DEVICE_ID_PHILIPS_SAA7134:
847                 switch (addr) {
848                         case MIXER_ADDR_TVTUNER:
849                                 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0xc0);
850                                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, 0x00);
851                                 break;
852                         case MIXER_ADDR_LINE1:
853                         case MIXER_ADDR_LINE2:
854                                 analog_io = (MIXER_ADDR_LINE1 == addr) ? 0x00 : 0x08;
855                                 rate = (32000 == dev->dmasound.rate) ? 0x01 : 0x03;
856                                 saa_andorb(SAA7134_ANALOG_IO_SELECT,  0x08, analog_io);
857                                 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0x80);
858                                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, rate);
859                                 break;
860                 }
861
862                 break;
863            case PCI_DEVICE_ID_PHILIPS_SAA7133:
864            case PCI_DEVICE_ID_PHILIPS_SAA7135:
865                 xbarin = 0x03; // adc
866                 anabar = 0;
867                 switch (addr) {
868                         case MIXER_ADDR_TVTUNER:
869                                 xbarin = 0; // Demodulator
870                                 anabar = 2; // DACs
871                                 break;
872                         case MIXER_ADDR_LINE1:
873                                 anabar = 0;  // aux1, aux1
874                                 break;
875                         case MIXER_ADDR_LINE2:
876                                 anabar = 9;  // aux2, aux2
877                                 break;
878                 }
879
880                 /* output xbar always main channel */
881                 saa_dsp_writel(dev, SAA7133_DIGITAL_OUTPUT_SEL1, 0xbbbb10);
882
883                 if (left || right) { // We've got data, turn the input on
884                   saa_dsp_writel(dev, SAA7133_DIGITAL_INPUT_XBAR1, xbarin);
885                   saa_writel(SAA7133_ANALOG_IO_SELECT, anabar);
886                 } else {
887                   saa_dsp_writel(dev, SAA7133_DIGITAL_INPUT_XBAR1, 0);
888                   saa_writel(SAA7133_ANALOG_IO_SELECT, 0);
889                 }
890                 break;
891           }
892         }
893
894         return change;
895 }
896
897 static struct snd_kcontrol_new snd_saa7134_controls[] = {
898 SAA713x_VOLUME("Video Volume", 0, MIXER_ADDR_TVTUNER),
899 SAA713x_CAPSRC("Video Capture Switch", 0, MIXER_ADDR_TVTUNER),
900 SAA713x_VOLUME("Line Volume", 1, MIXER_ADDR_LINE1),
901 SAA713x_CAPSRC("Line Capture Switch", 1, MIXER_ADDR_LINE1),
902 SAA713x_VOLUME("Line Volume", 2, MIXER_ADDR_LINE2),
903 SAA713x_CAPSRC("Line Capture Switch", 2, MIXER_ADDR_LINE2),
904 };
905
906 /*
907  * ALSA mixer setup
908  *
909  *   Called when initializing the board. Sets up the name and hooks up
910  *  the callbacks
911  *
912  */
913
914 static int snd_card_saa7134_new_mixer(snd_card_saa7134_t * chip)
915 {
916         struct snd_card *card = chip->card;
917         unsigned int idx;
918         int err;
919
920         snd_assert(chip != NULL, return -EINVAL);
921         strcpy(card->mixername, "SAA7134 Mixer");
922
923         for (idx = 0; idx < ARRAY_SIZE(snd_saa7134_controls); idx++) {
924                 if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_saa7134_controls[idx], chip))) < 0)
925                         return err;
926         }
927         return 0;
928 }
929
930 static void snd_saa7134_free(struct snd_card * card)
931 {
932         snd_card_saa7134_t *chip = card->private_data;
933
934         if (chip->dev->dmasound.priv_data == NULL)
935                 return;
936
937         if (chip->irq >= 0) {
938                 synchronize_irq(chip->irq);
939                 free_irq(chip->irq, &chip->dev->dmasound);
940         }
941
942         chip->dev->dmasound.priv_data = NULL;
943
944 }
945
946 /*
947  * ALSA initialization
948  *
949  *   Called by the init routine, once for each saa7134 device present,
950  *  it creates the basic structures and registers the ALSA devices
951  *
952  */
953
954 static int alsa_card_saa7134_create(struct saa7134_dev *dev, int devnum)
955 {
956
957         struct snd_card *card;
958         snd_card_saa7134_t *chip;
959         int err;
960
961
962         if (devnum >= SNDRV_CARDS)
963                 return -ENODEV;
964         if (!enable[devnum])
965                 return -ENODEV;
966
967         card = snd_card_new(index[devnum], id[devnum], THIS_MODULE, sizeof(snd_card_saa7134_t));
968
969         if (card == NULL)
970                 return -ENOMEM;
971
972         strcpy(card->driver, "SAA7134");
973
974         /* Card "creation" */
975
976         card->private_free = snd_saa7134_free;
977         chip = (snd_card_saa7134_t *) card->private_data;
978
979         spin_lock_init(&chip->lock);
980         spin_lock_init(&chip->mixer_lock);
981
982         chip->dev = dev;
983
984         chip->card = card;
985
986         chip->pci = dev->pci;
987         chip->iobase = pci_resource_start(dev->pci, 0);
988
989
990         err = request_irq(dev->pci->irq, saa7134_alsa_irq,
991                                 IRQF_SHARED | IRQF_DISABLED, dev->name,
992                                 (void*) &dev->dmasound);
993
994         if (err < 0) {
995                 printk(KERN_ERR "%s: can't get IRQ %d for ALSA\n",
996                         dev->name, dev->pci->irq);
997                 goto __nodev;
998         }
999
1000         chip->irq = dev->pci->irq;
1001
1002         mutex_init(&dev->dmasound.lock);
1003
1004         if ((err = snd_card_saa7134_new_mixer(chip)) < 0)
1005                 goto __nodev;
1006
1007         if ((err = snd_card_saa7134_pcm(chip, 0)) < 0)
1008                 goto __nodev;
1009
1010         snd_card_set_dev(card, &chip->pci->dev);
1011
1012         /* End of "creation" */
1013
1014         strcpy(card->shortname, "SAA7134");
1015         sprintf(card->longname, "%s at 0x%lx irq %d",
1016                 chip->dev->name, chip->iobase, chip->irq);
1017
1018         printk(KERN_INFO "%s/alsa: %s registered as card %d\n",dev->name,card->longname,index[devnum]);
1019
1020         if ((err = snd_card_register(card)) == 0) {
1021                 snd_saa7134_cards[devnum] = card;
1022                 return 0;
1023         }
1024
1025 __nodev:
1026         snd_card_free(card);
1027         return err;
1028 }
1029
1030
1031 static int alsa_device_init(struct saa7134_dev *dev)
1032 {
1033         dev->dmasound.priv_data = dev;
1034         alsa_card_saa7134_create(dev,dev->nr);
1035         return 1;
1036 }
1037
1038 static int alsa_device_exit(struct saa7134_dev *dev)
1039 {
1040
1041         snd_card_free(snd_saa7134_cards[dev->nr]);
1042         snd_saa7134_cards[dev->nr] = NULL;
1043         return 1;
1044 }
1045
1046 /*
1047  * Module initializer
1048  *
1049  * Loops through present saa7134 cards, and assigns an ALSA device
1050  * to each one
1051  *
1052  */
1053
1054 static int saa7134_alsa_init(void)
1055 {
1056         struct saa7134_dev *dev = NULL;
1057         struct list_head *list;
1058
1059         if (!saa7134_dmasound_init && !saa7134_dmasound_exit) {
1060                 saa7134_dmasound_init = alsa_device_init;
1061                 saa7134_dmasound_exit = alsa_device_exit;
1062         } else {
1063                 printk(KERN_WARNING "saa7134 ALSA: can't load, DMA sound handler already assigned (probably to OSS)\n");
1064                 return -EBUSY;
1065         }
1066
1067         printk(KERN_INFO "saa7134 ALSA driver for DMA sound loaded\n");
1068
1069         list_for_each(list,&saa7134_devlist) {
1070                 dev = list_entry(list, struct saa7134_dev, devlist);
1071                 if (dev->dmasound.priv_data == NULL) {
1072                         alsa_device_init(dev);
1073                 } else {
1074                         printk(KERN_ERR "saa7134 ALSA: DMA sound is being handled by OSS. ignoring %s\n",dev->name);
1075                         return -EBUSY;
1076                 }
1077         }
1078
1079         if (dev == NULL)
1080                 printk(KERN_INFO "saa7134 ALSA: no saa7134 cards found\n");
1081
1082         return 0;
1083
1084 }
1085
1086 /*
1087  * Module destructor
1088  */
1089
1090 static void saa7134_alsa_exit(void)
1091 {
1092         int idx;
1093
1094         for (idx = 0; idx < SNDRV_CARDS; idx++) {
1095                 snd_card_free(snd_saa7134_cards[idx]);
1096         }
1097
1098         saa7134_dmasound_init = NULL;
1099         saa7134_dmasound_exit = NULL;
1100         printk(KERN_INFO "saa7134 ALSA driver for DMA sound unloaded\n");
1101
1102         return;
1103 }
1104
1105 /* We initialize this late, to make sure the sound system is up and running */
1106 late_initcall(saa7134_alsa_init);
1107 module_exit(saa7134_alsa_exit);
1108 MODULE_LICENSE("GPL");
1109 MODULE_AUTHOR("Ricardo Cerqueira");
1110
1111
1112