Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-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/core.h>
25 #include <sound/control.h>
26 #include <sound/pcm.h>
27 #include <sound/pcm_params.h>
28 #include <sound/initval.h>
29 #include <linux/interrupt.h>
30
31 #include "saa7134.h"
32 #include "saa7134-reg.h"
33
34 static unsigned int debug;
35 module_param(debug, int, 0644);
36 MODULE_PARM_DESC(debug,"enable debug messages [alsa]");
37
38 /*
39  * Configuration macros
40  */
41
42 /* defaults */
43 #define MIXER_ADDR_TVTUNER      0
44 #define MIXER_ADDR_LINE1        1
45 #define MIXER_ADDR_LINE2        2
46 #define MIXER_ADDR_LAST         2
47
48
49 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
50 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
51 static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 1};
52
53 module_param_array(index, int, NULL, 0444);
54 module_param_array(enable, int, NULL, 0444);
55 MODULE_PARM_DESC(index, "Index value for SAA7134 capture interface(s).");
56 MODULE_PARM_DESC(enable, "Enable (or not) the SAA7134 capture interface(s).");
57
58 #define dprintk(fmt, arg...)    if (debug) \
59         printk(KERN_DEBUG "%s/alsa: " fmt, dev->name , ##arg)
60
61
62
63 /*
64  * Main chip structure
65  */
66
67 typedef struct snd_card_saa7134 {
68         struct snd_card *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         s16 irq;
77         u16 mute_was_on;
78
79         spinlock_t lock;
80 } snd_card_saa7134_t;
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         struct snd_pcm_substream *substream;
93 } snd_card_saa7134_pcm_t;
94
95 static struct snd_card *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)
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,
224                                    SAA7134_IRQ_REPORT_DONE_RA3);
225                         saa7134_irq_alsa_done(dev, status);
226                 } else {
227                         goto out;
228                 }
229         }
230
231         if (loop == 10) {
232                 dprintk("error! looping IRQ!");
233         }
234
235 out:
236         return IRQ_RETVAL(handled);
237 }
238
239 /*
240  * ALSA capture trigger
241  *
242  *   - One of the ALSA capture callbacks.
243  *
244  *   Called whenever a capture is started or stopped. Must be defined,
245  *   but there's nothing we want to do here
246  *
247  */
248
249 static int snd_card_saa7134_capture_trigger(struct snd_pcm_substream * substream,
250                                           int cmd)
251 {
252         struct snd_pcm_runtime *runtime = substream->runtime;
253         snd_card_saa7134_pcm_t *pcm = runtime->private_data;
254         struct saa7134_dev *dev=pcm->dev;
255         int err = 0;
256
257         spin_lock(&dev->slock);
258         if (cmd == SNDRV_PCM_TRIGGER_START) {
259                 /* start dma */
260                 saa7134_dma_start(dev);
261         } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
262                 /* stop dma */
263                 saa7134_dma_stop(dev);
264         } else {
265                 err = -EINVAL;
266         }
267         spin_unlock(&dev->slock);
268
269         return err;
270 }
271
272 /*
273  * DMA buffer initialization
274  *
275  *   Uses V4L functions to initialize the DMA. Shouldn't be necessary in
276  *  ALSA, but I was unable to use ALSA's own DMA, and had to force the
277  *  usage of V4L's
278  *
279  *   - Copied verbatim from saa7134-oss.
280  *
281  */
282
283 static int dsp_buffer_init(struct saa7134_dev *dev)
284 {
285         int err;
286
287         BUG_ON(!dev->dmasound.bufsize);
288
289         videobuf_dma_init(&dev->dmasound.dma);
290         err = videobuf_dma_init_kernel(&dev->dmasound.dma, PCI_DMA_FROMDEVICE,
291                                        (dev->dmasound.bufsize + PAGE_SIZE) >> PAGE_SHIFT);
292         if (0 != err)
293                 return err;
294         return 0;
295 }
296
297 /*
298  * DMA buffer release
299  *
300  *   Called after closing the device, during snd_card_saa7134_capture_close
301  *
302  */
303
304 static int dsp_buffer_free(struct saa7134_dev *dev)
305 {
306         BUG_ON(!dev->dmasound.blksize);
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(struct snd_pcm_substream * substream)
331 {
332         struct snd_pcm_runtime *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
420 snd_card_saa7134_capture_pointer(struct snd_pcm_substream * substream)
421 {
422         struct snd_pcm_runtime *runtime = substream->runtime;
423         snd_card_saa7134_pcm_t *pcm = runtime->private_data;
424         struct saa7134_dev *dev=pcm->dev;
425
426         if (dev->dmasound.read_count) {
427                 dev->dmasound.read_count  -= snd_pcm_lib_period_bytes(substream);
428                 dev->dmasound.read_offset += snd_pcm_lib_period_bytes(substream);
429                 if (dev->dmasound.read_offset == dev->dmasound.bufsize)
430                         dev->dmasound.read_offset = 0;
431         }
432
433         return bytes_to_frames(runtime, dev->dmasound.read_offset);
434 }
435
436 /*
437  * ALSA hardware capabilities definition
438  */
439
440 static struct snd_pcm_hardware snd_card_saa7134_capture =
441 {
442         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
443                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
444                                  SNDRV_PCM_INFO_MMAP_VALID),
445         .formats =              SNDRV_PCM_FMTBIT_S16_LE | \
446                                 SNDRV_PCM_FMTBIT_S16_BE | \
447                                 SNDRV_PCM_FMTBIT_S8 | \
448                                 SNDRV_PCM_FMTBIT_U8 | \
449                                 SNDRV_PCM_FMTBIT_U16_LE | \
450                                 SNDRV_PCM_FMTBIT_U16_BE,
451         .rates =                SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_48000,
452         .rate_min =             32000,
453         .rate_max =             48000,
454         .channels_min =         1,
455         .channels_max =         2,
456         .buffer_bytes_max =     (256*1024),
457         .period_bytes_min =     64,
458         .period_bytes_max =     (256*1024),
459         .periods_min =          4,
460         .periods_max =          1024,
461 };
462
463 static void snd_card_saa7134_runtime_free(struct snd_pcm_runtime *runtime)
464 {
465         snd_card_saa7134_pcm_t *pcm = runtime->private_data;
466
467         kfree(pcm);
468 }
469
470
471 /*
472  * ALSA hardware params
473  *
474  *   - One of the ALSA capture callbacks.
475  *
476  *   Called on initialization, right before the PCM preparation
477  *
478  */
479
480 static int snd_card_saa7134_hw_params(struct snd_pcm_substream * substream,
481                                       struct snd_pcm_hw_params * hw_params)
482 {
483         snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
484         struct saa7134_dev *dev;
485         unsigned int period_size, periods;
486         int err;
487
488         period_size = params_period_bytes(hw_params);
489         periods = params_periods(hw_params);
490
491         if (period_size < 0x100 || period_size > 0x10000)
492                 return -EINVAL;
493         if (periods < 4)
494                 return -EINVAL;
495         if (period_size * periods > 1024 * 1024)
496                 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_sg_dma_unmap(&dev->pci->dev, &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_sg_dma_map(&dev->pci->dev, &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_sg_dma_unmap(&dev->pci->dev, &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_sg_dma_unmap(&dev->pci->dev, &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_sg_dma_unmap(&dev->pci->dev, &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;
618         int amux, err;
619
620         if (!saa7134) {
621                 printk(KERN_ERR "BUG: saa7134 can't find device struct."
622                                 " Can't proceed with open\n");
623                 return -ENODEV;
624         }
625         dev = saa7134->dev;
626         mutex_lock(&dev->dmasound.lock);
627
628         dev->dmasound.read_count  = 0;
629         dev->dmasound.read_offset = 0;
630
631         amux = dev->input->amux;
632         if ((amux < 1) || (amux > 3))
633                 amux = 1;
634         dev->dmasound.input  =  amux - 1;
635
636         mutex_unlock(&dev->dmasound.lock);
637
638         pcm = kzalloc(sizeof(*pcm), GFP_KERNEL);
639         if (pcm == NULL)
640                 return -ENOMEM;
641
642         pcm->dev=saa7134->dev;
643
644         spin_lock_init(&pcm->lock);
645
646         pcm->substream = substream;
647         runtime->private_data = pcm;
648         runtime->private_free = snd_card_saa7134_runtime_free;
649         runtime->hw = snd_card_saa7134_capture;
650
651         if (dev->ctl_mute != 0) {
652                 saa7134->mute_was_on = 1;
653                 dev->ctl_mute = 0;
654                 saa7134_tvaudio_setmute(dev);
655         }
656
657         err = snd_pcm_hw_constraint_integer(runtime,
658                                                 SNDRV_PCM_HW_PARAM_PERIODS);
659         if (err < 0)
660                 return err;
661
662         err = snd_pcm_hw_constraint_step(runtime, 0,
663                                                 SNDRV_PCM_HW_PARAM_PERIODS, 2);
664         if (err < 0)
665                 return err;
666
667         return 0;
668 }
669
670 /*
671  * page callback (needed for mmap)
672  */
673
674 static struct page *snd_card_saa7134_page(struct snd_pcm_substream *substream,
675                                         unsigned long offset)
676 {
677         void *pageptr = substream->runtime->dma_area + offset;
678         return vmalloc_to_page(pageptr);
679 }
680
681 /*
682  * ALSA capture callbacks definition
683  */
684
685 static struct snd_pcm_ops snd_card_saa7134_capture_ops = {
686         .open =                 snd_card_saa7134_capture_open,
687         .close =                snd_card_saa7134_capture_close,
688         .ioctl =                snd_pcm_lib_ioctl,
689         .hw_params =            snd_card_saa7134_hw_params,
690         .hw_free =              snd_card_saa7134_hw_free,
691         .prepare =              snd_card_saa7134_capture_prepare,
692         .trigger =              snd_card_saa7134_capture_trigger,
693         .pointer =              snd_card_saa7134_capture_pointer,
694         .page =                 snd_card_saa7134_page,
695 };
696
697 /*
698  * ALSA PCM setup
699  *
700  *   Called when initializing the board. Sets up the name and hooks up
701  *  the callbacks
702  *
703  */
704
705 static int snd_card_saa7134_pcm(snd_card_saa7134_t *saa7134, int device)
706 {
707         struct snd_pcm *pcm;
708         int err;
709
710         if ((err = snd_pcm_new(saa7134->card, "SAA7134 PCM", device, 0, 1, &pcm)) < 0)
711                 return err;
712         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_card_saa7134_capture_ops);
713         pcm->private_data = saa7134;
714         pcm->info_flags = 0;
715         strcpy(pcm->name, "SAA7134 PCM");
716         return 0;
717 }
718
719 #define SAA713x_VOLUME(xname, xindex, addr) \
720 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
721   .info = snd_saa7134_volume_info, \
722   .get = snd_saa7134_volume_get, .put = snd_saa7134_volume_put, \
723   .private_value = addr }
724
725 static int snd_saa7134_volume_info(struct snd_kcontrol * kcontrol,
726                                    struct snd_ctl_elem_info * uinfo)
727 {
728         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
729         uinfo->count = 2;
730         uinfo->value.integer.min = 0;
731         uinfo->value.integer.max = 20;
732         return 0;
733 }
734
735 static int snd_saa7134_volume_get(struct snd_kcontrol * kcontrol,
736                                   struct snd_ctl_elem_value * ucontrol)
737 {
738         snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
739         int addr = kcontrol->private_value;
740
741         ucontrol->value.integer.value[0] = chip->mixer_volume[addr][0];
742         ucontrol->value.integer.value[1] = chip->mixer_volume[addr][1];
743         return 0;
744 }
745
746 static int snd_saa7134_volume_put(struct snd_kcontrol * kcontrol,
747                                   struct snd_ctl_elem_value * ucontrol)
748 {
749         snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
750         struct saa7134_dev *dev = chip->dev;
751
752         int change, addr = kcontrol->private_value;
753         int left, right;
754
755         left = ucontrol->value.integer.value[0];
756         if (left < 0)
757                 left = 0;
758         if (left > 20)
759                 left = 20;
760         right = ucontrol->value.integer.value[1];
761         if (right < 0)
762                 right = 0;
763         if (right > 20)
764                 right = 20;
765         spin_lock_irq(&chip->mixer_lock);
766         change = 0;
767         if (chip->mixer_volume[addr][0] != left) {
768                 change = 1;
769                 right = left;
770         }
771         if (chip->mixer_volume[addr][1] != right) {
772                 change = 1;
773                 left = right;
774         }
775         if (change) {
776                 switch (dev->pci->device) {
777                         case PCI_DEVICE_ID_PHILIPS_SAA7134:
778                                 switch (addr) {
779                                         case MIXER_ADDR_TVTUNER:
780                                                 left = 20;
781                                                 break;
782                                         case MIXER_ADDR_LINE1:
783                                                 saa_andorb(SAA7134_ANALOG_IO_SELECT,  0x10,
784                                                            (left > 10) ? 0x00 : 0x10);
785                                                 break;
786                                         case MIXER_ADDR_LINE2:
787                                                 saa_andorb(SAA7134_ANALOG_IO_SELECT,  0x20,
788                                                            (left > 10) ? 0x00 : 0x20);
789                                                 break;
790                                 }
791                                 break;
792                         case PCI_DEVICE_ID_PHILIPS_SAA7133:
793                         case PCI_DEVICE_ID_PHILIPS_SAA7135:
794                                 switch (addr) {
795                                         case MIXER_ADDR_TVTUNER:
796                                                 left = 20;
797                                                 break;
798                                         case MIXER_ADDR_LINE1:
799                                                 saa_andorb(0x0594,  0x10,
800                                                            (left > 10) ? 0x00 : 0x10);
801                                                 break;
802                                         case MIXER_ADDR_LINE2:
803                                                 saa_andorb(0x0594,  0x20,
804                                                            (left > 10) ? 0x00 : 0x20);
805                                                 break;
806                                 }
807                                 break;
808                 }
809                 chip->mixer_volume[addr][0] = left;
810                 chip->mixer_volume[addr][1] = right;
811         }
812         spin_unlock_irq(&chip->mixer_lock);
813         return change;
814 }
815
816 #define SAA713x_CAPSRC(xname, xindex, addr) \
817 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
818   .info = snd_saa7134_capsrc_info, \
819   .get = snd_saa7134_capsrc_get, .put = snd_saa7134_capsrc_put, \
820   .private_value = addr }
821
822 static int snd_saa7134_capsrc_info(struct snd_kcontrol * kcontrol,
823                                    struct snd_ctl_elem_info * uinfo)
824 {
825         uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
826         uinfo->count = 2;
827         uinfo->value.integer.min = 0;
828         uinfo->value.integer.max = 1;
829         return 0;
830 }
831
832 static int snd_saa7134_capsrc_get(struct snd_kcontrol * kcontrol,
833                                   struct snd_ctl_elem_value * ucontrol)
834 {
835         snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
836         int addr = kcontrol->private_value;
837
838         spin_lock_irq(&chip->mixer_lock);
839         ucontrol->value.integer.value[0] = chip->capture_source[addr][0];
840         ucontrol->value.integer.value[1] = chip->capture_source[addr][1];
841         spin_unlock_irq(&chip->mixer_lock);
842
843         return 0;
844 }
845
846 static int snd_saa7134_capsrc_put(struct snd_kcontrol * kcontrol,
847                                   struct snd_ctl_elem_value * ucontrol)
848 {
849         snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
850         int change, addr = kcontrol->private_value;
851         int left, right;
852         u32 anabar, xbarin;
853         int analog_io, rate;
854         struct saa7134_dev *dev;
855
856         dev = chip->dev;
857
858         left = ucontrol->value.integer.value[0] & 1;
859         right = ucontrol->value.integer.value[1] & 1;
860         spin_lock_irq(&chip->mixer_lock);
861
862         change = chip->capture_source[addr][0] != left ||
863                  chip->capture_source[addr][1] != right;
864         chip->capture_source[addr][0] = left;
865         chip->capture_source[addr][1] = right;
866         dev->dmasound.input=addr;
867         spin_unlock_irq(&chip->mixer_lock);
868
869
870         if (change) {
871           switch (dev->pci->device) {
872
873            case PCI_DEVICE_ID_PHILIPS_SAA7134:
874                 switch (addr) {
875                         case MIXER_ADDR_TVTUNER:
876                                 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0xc0);
877                                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, 0x00);
878                                 break;
879                         case MIXER_ADDR_LINE1:
880                         case MIXER_ADDR_LINE2:
881                                 analog_io = (MIXER_ADDR_LINE1 == addr) ? 0x00 : 0x08;
882                                 rate = (32000 == dev->dmasound.rate) ? 0x01 : 0x03;
883                                 saa_andorb(SAA7134_ANALOG_IO_SELECT,  0x08, analog_io);
884                                 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0x80);
885                                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, rate);
886                                 break;
887                 }
888
889                 break;
890            case PCI_DEVICE_ID_PHILIPS_SAA7133:
891            case PCI_DEVICE_ID_PHILIPS_SAA7135:
892                 xbarin = 0x03; // adc
893                 anabar = 0;
894                 switch (addr) {
895                         case MIXER_ADDR_TVTUNER:
896                                 xbarin = 0; // Demodulator
897                                 anabar = 2; // DACs
898                                 break;
899                         case MIXER_ADDR_LINE1:
900                                 anabar = 0;  // aux1, aux1
901                                 break;
902                         case MIXER_ADDR_LINE2:
903                                 anabar = 9;  // aux2, aux2
904                                 break;
905                 }
906
907                 /* output xbar always main channel */
908                 saa_dsp_writel(dev, SAA7133_DIGITAL_OUTPUT_SEL1, 0xbbbb10);
909
910                 if (left || right) { // We've got data, turn the input on
911                   saa_dsp_writel(dev, SAA7133_DIGITAL_INPUT_XBAR1, xbarin);
912                   saa_writel(SAA7133_ANALOG_IO_SELECT, anabar);
913                 } else {
914                   saa_dsp_writel(dev, SAA7133_DIGITAL_INPUT_XBAR1, 0);
915                   saa_writel(SAA7133_ANALOG_IO_SELECT, 0);
916                 }
917                 break;
918           }
919         }
920
921         return change;
922 }
923
924 static struct snd_kcontrol_new snd_saa7134_controls[] = {
925 SAA713x_VOLUME("Video Volume", 0, MIXER_ADDR_TVTUNER),
926 SAA713x_CAPSRC("Video Capture Switch", 0, MIXER_ADDR_TVTUNER),
927 SAA713x_VOLUME("Line Volume", 1, MIXER_ADDR_LINE1),
928 SAA713x_CAPSRC("Line Capture Switch", 1, MIXER_ADDR_LINE1),
929 SAA713x_VOLUME("Line Volume", 2, MIXER_ADDR_LINE2),
930 SAA713x_CAPSRC("Line Capture Switch", 2, MIXER_ADDR_LINE2),
931 };
932
933 /*
934  * ALSA mixer setup
935  *
936  *   Called when initializing the board. Sets up the name and hooks up
937  *  the callbacks
938  *
939  */
940
941 static int snd_card_saa7134_new_mixer(snd_card_saa7134_t * chip)
942 {
943         struct snd_card *card = chip->card;
944         unsigned int idx;
945         int err;
946
947         if (snd_BUG_ON(!chip))
948                 return -EINVAL;
949         strcpy(card->mixername, "SAA7134 Mixer");
950
951         for (idx = 0; idx < ARRAY_SIZE(snd_saa7134_controls); idx++) {
952                 if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_saa7134_controls[idx], chip))) < 0)
953                         return err;
954         }
955         return 0;
956 }
957
958 static void snd_saa7134_free(struct snd_card * card)
959 {
960         snd_card_saa7134_t *chip = card->private_data;
961
962         if (chip->dev->dmasound.priv_data == NULL)
963                 return;
964
965         if (chip->irq >= 0)
966                 free_irq(chip->irq, &chip->dev->dmasound);
967
968         chip->dev->dmasound.priv_data = NULL;
969
970 }
971
972 /*
973  * ALSA initialization
974  *
975  *   Called by the init routine, once for each saa7134 device present,
976  *  it creates the basic structures and registers the ALSA devices
977  *
978  */
979
980 static int alsa_card_saa7134_create(struct saa7134_dev *dev, int devnum)
981 {
982
983         struct snd_card *card;
984         snd_card_saa7134_t *chip;
985         int err;
986
987
988         if (devnum >= SNDRV_CARDS)
989                 return -ENODEV;
990         if (!enable[devnum])
991                 return -ENODEV;
992
993         card = snd_card_new(index[devnum], id[devnum], THIS_MODULE, sizeof(snd_card_saa7134_t));
994
995         if (card == NULL)
996                 return -ENOMEM;
997
998         strcpy(card->driver, "SAA7134");
999
1000         /* Card "creation" */
1001
1002         card->private_free = snd_saa7134_free;
1003         chip = (snd_card_saa7134_t *) card->private_data;
1004
1005         spin_lock_init(&chip->lock);
1006         spin_lock_init(&chip->mixer_lock);
1007
1008         chip->dev = dev;
1009
1010         chip->card = card;
1011
1012         chip->pci = dev->pci;
1013         chip->iobase = pci_resource_start(dev->pci, 0);
1014
1015
1016         err = request_irq(dev->pci->irq, saa7134_alsa_irq,
1017                                 IRQF_SHARED | IRQF_DISABLED, dev->name,
1018                                 (void*) &dev->dmasound);
1019
1020         if (err < 0) {
1021                 printk(KERN_ERR "%s: can't get IRQ %d for ALSA\n",
1022                         dev->name, dev->pci->irq);
1023                 goto __nodev;
1024         }
1025
1026         chip->irq = dev->pci->irq;
1027
1028         mutex_init(&dev->dmasound.lock);
1029
1030         if ((err = snd_card_saa7134_new_mixer(chip)) < 0)
1031                 goto __nodev;
1032
1033         if ((err = snd_card_saa7134_pcm(chip, 0)) < 0)
1034                 goto __nodev;
1035
1036         snd_card_set_dev(card, &chip->pci->dev);
1037
1038         /* End of "creation" */
1039
1040         strcpy(card->shortname, "SAA7134");
1041         sprintf(card->longname, "%s at 0x%lx irq %d",
1042                 chip->dev->name, chip->iobase, chip->irq);
1043
1044         printk(KERN_INFO "%s/alsa: %s registered as card %d\n",dev->name,card->longname,index[devnum]);
1045
1046         if ((err = snd_card_register(card)) == 0) {
1047                 snd_saa7134_cards[devnum] = card;
1048                 return 0;
1049         }
1050
1051 __nodev:
1052         snd_card_free(card);
1053         return err;
1054 }
1055
1056
1057 static int alsa_device_init(struct saa7134_dev *dev)
1058 {
1059         dev->dmasound.priv_data = dev;
1060         alsa_card_saa7134_create(dev,dev->nr);
1061         return 1;
1062 }
1063
1064 static int alsa_device_exit(struct saa7134_dev *dev)
1065 {
1066
1067         snd_card_free(snd_saa7134_cards[dev->nr]);
1068         snd_saa7134_cards[dev->nr] = NULL;
1069         return 1;
1070 }
1071
1072 /*
1073  * Module initializer
1074  *
1075  * Loops through present saa7134 cards, and assigns an ALSA device
1076  * to each one
1077  *
1078  */
1079
1080 static int saa7134_alsa_init(void)
1081 {
1082         struct saa7134_dev *dev = NULL;
1083         struct list_head *list;
1084
1085         saa7134_dmasound_init = alsa_device_init;
1086         saa7134_dmasound_exit = alsa_device_exit;
1087
1088         printk(KERN_INFO "saa7134 ALSA driver for DMA sound loaded\n");
1089
1090         list_for_each(list,&saa7134_devlist) {
1091                 dev = list_entry(list, struct saa7134_dev, devlist);
1092                 alsa_device_init(dev);
1093         }
1094
1095         if (dev == NULL)
1096                 printk(KERN_INFO "saa7134 ALSA: no saa7134 cards found\n");
1097
1098         return 0;
1099
1100 }
1101
1102 /*
1103  * Module destructor
1104  */
1105
1106 static void saa7134_alsa_exit(void)
1107 {
1108         int idx;
1109
1110         for (idx = 0; idx < SNDRV_CARDS; idx++) {
1111                 snd_card_free(snd_saa7134_cards[idx]);
1112         }
1113
1114         saa7134_dmasound_init = NULL;
1115         saa7134_dmasound_exit = NULL;
1116         printk(KERN_INFO "saa7134 ALSA driver for DMA sound unloaded\n");
1117
1118         return;
1119 }
1120
1121 /* We initialize this late, to make sure the sound system is up and running */
1122 late_initcall(saa7134_alsa_init);
1123 module_exit(saa7134_alsa_exit);
1124 MODULE_LICENSE("GPL");
1125 MODULE_AUTHOR("Ricardo Cerqueira");