Merge branch 'linus' into core/generic-dma-coherent
[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 /*
85  * PCM structure
86  */
87
88 typedef struct snd_card_saa7134_pcm {
89         struct saa7134_dev *dev;
90
91         spinlock_t lock;
92
93         struct snd_pcm_substream *substream;
94 } snd_card_saa7134_pcm_t;
95
96 static struct snd_card *snd_saa7134_cards[SNDRV_CARDS];
97
98
99 /*
100  * saa7134 DMA audio stop
101  *
102  *   Called when the capture device is released or the buffer overflows
103  *
104  *   - Copied verbatim from saa7134-oss's dsp_dma_stop.
105  *
106  */
107
108 static void saa7134_dma_stop(struct saa7134_dev *dev)
109 {
110         dev->dmasound.dma_blk     = -1;
111         dev->dmasound.dma_running = 0;
112         saa7134_set_dmabits(dev);
113 }
114
115 /*
116  * saa7134 DMA audio start
117  *
118  *   Called when preparing the capture device for use
119  *
120  *   - Copied verbatim from saa7134-oss's dsp_dma_start.
121  *
122  */
123
124 static void saa7134_dma_start(struct saa7134_dev *dev)
125 {
126         dev->dmasound.dma_blk     = 0;
127         dev->dmasound.dma_running = 1;
128         saa7134_set_dmabits(dev);
129 }
130
131 /*
132  * saa7134 audio DMA IRQ handler
133  *
134  *   Called whenever we get an SAA7134_IRQ_REPORT_DONE_RA3 interrupt
135  *   Handles shifting between the 2 buffers, manages the read counters,
136  *  and notifies ALSA when periods elapse
137  *
138  *   - Mostly copied from saa7134-oss's saa7134_irq_oss_done.
139  *
140  */
141
142 static void saa7134_irq_alsa_done(struct saa7134_dev *dev,
143                                   unsigned long status)
144 {
145         int next_blk, reg = 0;
146
147         spin_lock(&dev->slock);
148         if (UNSET == dev->dmasound.dma_blk) {
149                 dprintk("irq: recording stopped\n");
150                 goto done;
151         }
152         if (0 != (status & 0x0f000000))
153                 dprintk("irq: lost %ld\n", (status >> 24) & 0x0f);
154         if (0 == (status & 0x10000000)) {
155                 /* odd */
156                 if (0 == (dev->dmasound.dma_blk & 0x01))
157                         reg = SAA7134_RS_BA1(6);
158         } else {
159                 /* even */
160                 if (1 == (dev->dmasound.dma_blk & 0x01))
161                         reg = SAA7134_RS_BA2(6);
162         }
163         if (0 == reg) {
164                 dprintk("irq: field oops [%s]\n",
165                         (status & 0x10000000) ? "even" : "odd");
166                 goto done;
167         }
168
169         if (dev->dmasound.read_count >= dev->dmasound.blksize * (dev->dmasound.blocks-2)) {
170                 dprintk("irq: overrun [full=%d/%d] - Blocks in %d\n",dev->dmasound.read_count,
171                         dev->dmasound.bufsize, dev->dmasound.blocks);
172                 spin_unlock(&dev->slock);
173                 snd_pcm_stop(dev->dmasound.substream,SNDRV_PCM_STATE_XRUN);
174                 return;
175         }
176
177         /* next block addr */
178         next_blk = (dev->dmasound.dma_blk + 2) % dev->dmasound.blocks;
179         saa_writel(reg,next_blk * dev->dmasound.blksize);
180         if (debug > 2)
181                 dprintk("irq: ok, %s, next_blk=%d, addr=%x, blocks=%u, size=%u, read=%u\n",
182                         (status & 0x10000000) ? "even" : "odd ", next_blk,
183                         next_blk * dev->dmasound.blksize, dev->dmasound.blocks, dev->dmasound.blksize, dev->dmasound.read_count);
184
185         /* update status & wake waiting readers */
186         dev->dmasound.dma_blk = (dev->dmasound.dma_blk + 1) % dev->dmasound.blocks;
187         dev->dmasound.read_count += dev->dmasound.blksize;
188
189         dev->dmasound.recording_on = reg;
190
191         if (dev->dmasound.read_count >= snd_pcm_lib_period_bytes(dev->dmasound.substream)) {
192                 spin_unlock(&dev->slock);
193                 snd_pcm_period_elapsed(dev->dmasound.substream);
194                 spin_lock(&dev->slock);
195         }
196
197  done:
198         spin_unlock(&dev->slock);
199
200 }
201
202 /*
203  * IRQ request handler
204  *
205  *   Runs along with saa7134's IRQ handler, discards anything that isn't
206  *   DMA sound
207  *
208  */
209
210 static irqreturn_t saa7134_alsa_irq(int irq, void *dev_id)
211 {
212         struct saa7134_dmasound *dmasound = dev_id;
213         struct saa7134_dev *dev = dmasound->priv_data;
214
215         unsigned long report, status;
216         int loop, handled = 0;
217
218         for (loop = 0; loop < 10; loop++) {
219                 report = saa_readl(SAA7134_IRQ_REPORT);
220                 status = saa_readl(SAA7134_IRQ_STATUS);
221
222                 if (report & SAA7134_IRQ_REPORT_DONE_RA3) {
223                         handled = 1;
224                         saa_writel(SAA7134_IRQ_REPORT,
225                                    SAA7134_IRQ_REPORT_DONE_RA3);
226                         saa7134_irq_alsa_done(dev, status);
227                 } else {
228                         goto out;
229                 }
230         }
231
232         if (loop == 10) {
233                 dprintk("error! looping IRQ!");
234         }
235
236 out:
237         return IRQ_RETVAL(handled);
238 }
239
240 /*
241  * ALSA capture trigger
242  *
243  *   - One of the ALSA capture callbacks.
244  *
245  *   Called whenever a capture is started or stopped. Must be defined,
246  *   but there's nothing we want to do here
247  *
248  */
249
250 static int snd_card_saa7134_capture_trigger(struct snd_pcm_substream * substream,
251                                           int cmd)
252 {
253         struct snd_pcm_runtime *runtime = substream->runtime;
254         snd_card_saa7134_pcm_t *pcm = runtime->private_data;
255         struct saa7134_dev *dev=pcm->dev;
256         int err = 0;
257
258         spin_lock(&dev->slock);
259         if (cmd == SNDRV_PCM_TRIGGER_START) {
260                 /* start dma */
261                 saa7134_dma_start(dev);
262         } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
263                 /* stop dma */
264                 saa7134_dma_stop(dev);
265         } else {
266                 err = -EINVAL;
267         }
268         spin_unlock(&dev->slock);
269
270         return err;
271 }
272
273 /*
274  * DMA buffer initialization
275  *
276  *   Uses V4L functions to initialize the DMA. Shouldn't be necessary in
277  *  ALSA, but I was unable to use ALSA's own DMA, and had to force the
278  *  usage of V4L's
279  *
280  *   - Copied verbatim from saa7134-oss.
281  *
282  */
283
284 static int dsp_buffer_init(struct saa7134_dev *dev)
285 {
286         int err;
287
288         BUG_ON(!dev->dmasound.bufsize);
289
290         videobuf_dma_init(&dev->dmasound.dma);
291         err = videobuf_dma_init_kernel(&dev->dmasound.dma, PCI_DMA_FROMDEVICE,
292                                        (dev->dmasound.bufsize + PAGE_SIZE) >> PAGE_SHIFT);
293         if (0 != err)
294                 return err;
295         return 0;
296 }
297
298 /*
299  * DMA buffer release
300  *
301  *   Called after closing the device, during snd_card_saa7134_capture_close
302  *
303  */
304
305 static int dsp_buffer_free(struct saa7134_dev *dev)
306 {
307         BUG_ON(!dev->dmasound.blksize);
308
309         videobuf_dma_free(&dev->dmasound.dma);
310
311         dev->dmasound.blocks  = 0;
312         dev->dmasound.blksize = 0;
313         dev->dmasound.bufsize = 0;
314
315         return 0;
316 }
317
318
319 /*
320  * ALSA PCM preparation
321  *
322  *   - One of the ALSA capture callbacks.
323  *
324  *   Called right after the capture device is opened, this function configures
325  *  the buffer using the previously defined functions, allocates the memory,
326  *  sets up the hardware registers, and then starts the DMA. When this function
327  *  returns, the audio should be flowing.
328  *
329  */
330
331 static int snd_card_saa7134_capture_prepare(struct snd_pcm_substream * substream)
332 {
333         struct snd_pcm_runtime *runtime = substream->runtime;
334         int bswap, sign;
335         u32 fmt, control;
336         snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
337         struct saa7134_dev *dev;
338         snd_card_saa7134_pcm_t *pcm = runtime->private_data;
339
340         pcm->dev->dmasound.substream = substream;
341
342         dev = saa7134->dev;
343
344         if (snd_pcm_format_width(runtime->format) == 8)
345                 fmt = 0x00;
346         else
347                 fmt = 0x01;
348
349         if (snd_pcm_format_signed(runtime->format))
350                 sign = 1;
351         else
352                 sign = 0;
353
354         if (snd_pcm_format_big_endian(runtime->format))
355                 bswap = 1;
356         else
357                 bswap = 0;
358
359         switch (dev->pci->device) {
360           case PCI_DEVICE_ID_PHILIPS_SAA7134:
361                 if (1 == runtime->channels)
362                         fmt |= (1 << 3);
363                 if (2 == runtime->channels)
364                         fmt |= (3 << 3);
365                 if (sign)
366                         fmt |= 0x04;
367
368                 fmt |= (MIXER_ADDR_TVTUNER == dev->dmasound.input) ? 0xc0 : 0x80;
369                 saa_writeb(SAA7134_NUM_SAMPLES0, ((dev->dmasound.blksize - 1) & 0x0000ff));
370                 saa_writeb(SAA7134_NUM_SAMPLES1, ((dev->dmasound.blksize - 1) & 0x00ff00) >>  8);
371                 saa_writeb(SAA7134_NUM_SAMPLES2, ((dev->dmasound.blksize - 1) & 0xff0000) >> 16);
372                 saa_writeb(SAA7134_AUDIO_FORMAT_CTRL, fmt);
373
374                 break;
375           case PCI_DEVICE_ID_PHILIPS_SAA7133:
376           case PCI_DEVICE_ID_PHILIPS_SAA7135:
377                 if (1 == runtime->channels)
378                         fmt |= (1 << 4);
379                 if (2 == runtime->channels)
380                         fmt |= (2 << 4);
381                 if (!sign)
382                         fmt |= 0x04;
383                 saa_writel(SAA7133_NUM_SAMPLES, dev->dmasound.blksize -1);
384                 saa_writel(SAA7133_AUDIO_CHANNEL, 0x543210 | (fmt << 24));
385                 break;
386         }
387
388         dprintk("rec_start: afmt=%d ch=%d  =>  fmt=0x%x swap=%c\n",
389                 runtime->format, runtime->channels, fmt,
390                 bswap ? 'b' : '-');
391         /* dma: setup channel 6 (= AUDIO) */
392         control = SAA7134_RS_CONTROL_BURST_16 |
393                 SAA7134_RS_CONTROL_ME |
394                 (dev->dmasound.pt.dma >> 12);
395         if (bswap)
396                 control |= SAA7134_RS_CONTROL_BSWAP;
397
398         saa_writel(SAA7134_RS_BA1(6),0);
399         saa_writel(SAA7134_RS_BA2(6),dev->dmasound.blksize);
400         saa_writel(SAA7134_RS_PITCH(6),0);
401         saa_writel(SAA7134_RS_CONTROL(6),control);
402
403         dev->dmasound.rate = runtime->rate;
404
405         return 0;
406
407 }
408
409 /*
410  * ALSA pointer fetching
411  *
412  *   - One of the ALSA capture callbacks.
413  *
414  *   Called whenever a period elapses, it must return the current hardware
415  *  position of the buffer.
416  *   Also resets the read counter used to prevent overruns
417  *
418  */
419
420 static snd_pcm_uframes_t
421 snd_card_saa7134_capture_pointer(struct snd_pcm_substream * substream)
422 {
423         struct snd_pcm_runtime *runtime = substream->runtime;
424         snd_card_saa7134_pcm_t *pcm = runtime->private_data;
425         struct saa7134_dev *dev=pcm->dev;
426
427         if (dev->dmasound.read_count) {
428                 dev->dmasound.read_count  -= snd_pcm_lib_period_bytes(substream);
429                 dev->dmasound.read_offset += snd_pcm_lib_period_bytes(substream);
430                 if (dev->dmasound.read_offset == dev->dmasound.bufsize)
431                         dev->dmasound.read_offset = 0;
432         }
433
434         return bytes_to_frames(runtime, dev->dmasound.read_offset);
435 }
436
437 /*
438  * ALSA hardware capabilities definition
439  */
440
441 static struct snd_pcm_hardware snd_card_saa7134_capture =
442 {
443         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
444                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
445                                  SNDRV_PCM_INFO_MMAP_VALID),
446         .formats =              SNDRV_PCM_FMTBIT_S16_LE | \
447                                 SNDRV_PCM_FMTBIT_S16_BE | \
448                                 SNDRV_PCM_FMTBIT_S8 | \
449                                 SNDRV_PCM_FMTBIT_U8 | \
450                                 SNDRV_PCM_FMTBIT_U16_LE | \
451                                 SNDRV_PCM_FMTBIT_U16_BE,
452         .rates =                SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_48000,
453         .rate_min =             32000,
454         .rate_max =             48000,
455         .channels_min =         1,
456         .channels_max =         2,
457         .buffer_bytes_max =     (256*1024),
458         .period_bytes_min =     64,
459         .period_bytes_max =     (256*1024),
460         .periods_min =          4,
461         .periods_max =          1024,
462 };
463
464 static void snd_card_saa7134_runtime_free(struct snd_pcm_runtime *runtime)
465 {
466         snd_card_saa7134_pcm_t *pcm = runtime->private_data;
467
468         kfree(pcm);
469 }
470
471
472 /*
473  * ALSA hardware params
474  *
475  *   - One of the ALSA capture callbacks.
476  *
477  *   Called on initialization, right before the PCM preparation
478  *
479  */
480
481 static int snd_card_saa7134_hw_params(struct snd_pcm_substream * substream,
482                                       struct snd_pcm_hw_params * hw_params)
483 {
484         snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
485         struct saa7134_dev *dev;
486         unsigned int period_size, periods;
487         int err;
488
489         period_size = params_period_bytes(hw_params);
490         periods = params_periods(hw_params);
491
492         snd_assert(period_size >= 0x100 && period_size <= 0x10000,
493                    return -EINVAL);
494         snd_assert(periods >= 4, return -EINVAL);
495         snd_assert(period_size * periods <= 1024 * 1024, return -EINVAL);
496
497         dev = saa7134->dev;
498
499         if (dev->dmasound.blocks == periods &&
500             dev->dmasound.blksize == period_size)
501                 return 0;
502
503         /* release the old buffer */
504         if (substream->runtime->dma_area) {
505                 saa7134_pgtable_free(dev->pci, &dev->dmasound.pt);
506                 videobuf_sg_dma_unmap(&dev->pci->dev, &dev->dmasound.dma);
507                 dsp_buffer_free(dev);
508                 substream->runtime->dma_area = NULL;
509         }
510         dev->dmasound.blocks  = periods;
511         dev->dmasound.blksize = period_size;
512         dev->dmasound.bufsize = period_size * periods;
513
514         err = dsp_buffer_init(dev);
515         if (0 != err) {
516                 dev->dmasound.blocks  = 0;
517                 dev->dmasound.blksize = 0;
518                 dev->dmasound.bufsize = 0;
519                 return err;
520         }
521
522         if (0 != (err = videobuf_sg_dma_map(&dev->pci->dev, &dev->dmasound.dma))) {
523                 dsp_buffer_free(dev);
524                 return err;
525         }
526         if (0 != (err = saa7134_pgtable_alloc(dev->pci,&dev->dmasound.pt))) {
527                 videobuf_sg_dma_unmap(&dev->pci->dev, &dev->dmasound.dma);
528                 dsp_buffer_free(dev);
529                 return err;
530         }
531         if (0 != (err = saa7134_pgtable_build(dev->pci,&dev->dmasound.pt,
532                                                 dev->dmasound.dma.sglist,
533                                                 dev->dmasound.dma.sglen,
534                                                 0))) {
535                 saa7134_pgtable_free(dev->pci, &dev->dmasound.pt);
536                 videobuf_sg_dma_unmap(&dev->pci->dev, &dev->dmasound.dma);
537                 dsp_buffer_free(dev);
538                 return err;
539         }
540
541         /* I should be able to use runtime->dma_addr in the control
542            byte, but it doesn't work. So I allocate the DMA using the
543            V4L functions, and force ALSA to use that as the DMA area */
544
545         substream->runtime->dma_area = dev->dmasound.dma.vmalloc;
546         substream->runtime->dma_bytes = dev->dmasound.bufsize;
547         substream->runtime->dma_addr = 0;
548
549         return 0;
550
551 }
552
553 /*
554  * ALSA hardware release
555  *
556  *   - One of the ALSA capture callbacks.
557  *
558  *   Called after closing the device, but before snd_card_saa7134_capture_close
559  *   It stops the DMA audio and releases the buffers.
560  *
561  */
562
563 static int snd_card_saa7134_hw_free(struct snd_pcm_substream * substream)
564 {
565         snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
566         struct saa7134_dev *dev;
567
568         dev = saa7134->dev;
569
570         if (substream->runtime->dma_area) {
571                 saa7134_pgtable_free(dev->pci, &dev->dmasound.pt);
572                 videobuf_sg_dma_unmap(&dev->pci->dev, &dev->dmasound.dma);
573                 dsp_buffer_free(dev);
574                 substream->runtime->dma_area = NULL;
575         }
576
577         return 0;
578 }
579
580 /*
581  * ALSA capture finish
582  *
583  *   - One of the ALSA capture callbacks.
584  *
585  *   Called after closing the device.
586  *
587  */
588
589 static int snd_card_saa7134_capture_close(struct snd_pcm_substream * substream)
590 {
591         snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
592         struct saa7134_dev *dev = saa7134->dev;
593
594         if (saa7134->mute_was_on) {
595                 dev->ctl_mute = 1;
596                 saa7134_tvaudio_setmute(dev);
597         }
598         return 0;
599 }
600
601 /*
602  * ALSA capture start
603  *
604  *   - One of the ALSA capture callbacks.
605  *
606  *   Called when opening the device. It creates and populates the PCM
607  *  structure
608  *
609  */
610
611 static int snd_card_saa7134_capture_open(struct snd_pcm_substream * substream)
612 {
613         struct snd_pcm_runtime *runtime = substream->runtime;
614         snd_card_saa7134_pcm_t *pcm;
615         snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
616         struct saa7134_dev *dev;
617         int amux, err;
618
619         if (!saa7134) {
620                 printk(KERN_ERR "BUG: saa7134 can't find device struct."
621                                 " Can't proceed with open\n");
622                 return -ENODEV;
623         }
624         dev = saa7134->dev;
625         mutex_lock(&dev->dmasound.lock);
626
627         dev->dmasound.read_count  = 0;
628         dev->dmasound.read_offset = 0;
629
630         amux = dev->input->amux;
631         if ((amux < 1) || (amux > 3))
632                 amux = 1;
633         dev->dmasound.input  =  amux - 1;
634
635         mutex_unlock(&dev->dmasound.lock);
636
637         pcm = kzalloc(sizeof(*pcm), GFP_KERNEL);
638         if (pcm == NULL)
639                 return -ENOMEM;
640
641         pcm->dev=saa7134->dev;
642
643         spin_lock_init(&pcm->lock);
644
645         pcm->substream = substream;
646         runtime->private_data = pcm;
647         runtime->private_free = snd_card_saa7134_runtime_free;
648         runtime->hw = snd_card_saa7134_capture;
649
650         if (dev->ctl_mute != 0) {
651                 saa7134->mute_was_on = 1;
652                 dev->ctl_mute = 0;
653                 saa7134_tvaudio_setmute(dev);
654         }
655
656         err = snd_pcm_hw_constraint_integer(runtime,
657                                                 SNDRV_PCM_HW_PARAM_PERIODS);
658         if (err < 0)
659                 return err;
660
661         err = snd_pcm_hw_constraint_step(runtime, 0,
662                                                 SNDRV_PCM_HW_PARAM_PERIODS, 2);
663         if (err < 0)
664                 return err;
665
666         return 0;
667 }
668
669 /*
670  * page callback (needed for mmap)
671  */
672
673 static struct page *snd_card_saa7134_page(struct snd_pcm_substream *substream,
674                                         unsigned long offset)
675 {
676         void *pageptr = substream->runtime->dma_area + offset;
677         return vmalloc_to_page(pageptr);
678 }
679
680 /*
681  * ALSA capture callbacks definition
682  */
683
684 static struct snd_pcm_ops snd_card_saa7134_capture_ops = {
685         .open =                 snd_card_saa7134_capture_open,
686         .close =                snd_card_saa7134_capture_close,
687         .ioctl =                snd_pcm_lib_ioctl,
688         .hw_params =            snd_card_saa7134_hw_params,
689         .hw_free =              snd_card_saa7134_hw_free,
690         .prepare =              snd_card_saa7134_capture_prepare,
691         .trigger =              snd_card_saa7134_capture_trigger,
692         .pointer =              snd_card_saa7134_capture_pointer,
693         .page =                 snd_card_saa7134_page,
694 };
695
696 /*
697  * ALSA PCM setup
698  *
699  *   Called when initializing the board. Sets up the name and hooks up
700  *  the callbacks
701  *
702  */
703
704 static int snd_card_saa7134_pcm(snd_card_saa7134_t *saa7134, int device)
705 {
706         struct snd_pcm *pcm;
707         int err;
708
709         if ((err = snd_pcm_new(saa7134->card, "SAA7134 PCM", device, 0, 1, &pcm)) < 0)
710                 return err;
711         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_card_saa7134_capture_ops);
712         pcm->private_data = saa7134;
713         pcm->info_flags = 0;
714         strcpy(pcm->name, "SAA7134 PCM");
715         return 0;
716 }
717
718 #define SAA713x_VOLUME(xname, xindex, addr) \
719 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
720   .info = snd_saa7134_volume_info, \
721   .get = snd_saa7134_volume_get, .put = snd_saa7134_volume_put, \
722   .private_value = addr }
723
724 static int snd_saa7134_volume_info(struct snd_kcontrol * kcontrol,
725                                    struct snd_ctl_elem_info * uinfo)
726 {
727         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
728         uinfo->count = 2;
729         uinfo->value.integer.min = 0;
730         uinfo->value.integer.max = 20;
731         return 0;
732 }
733
734 static int snd_saa7134_volume_get(struct snd_kcontrol * kcontrol,
735                                   struct snd_ctl_elem_value * ucontrol)
736 {
737         snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
738         int addr = kcontrol->private_value;
739
740         ucontrol->value.integer.value[0] = chip->mixer_volume[addr][0];
741         ucontrol->value.integer.value[1] = chip->mixer_volume[addr][1];
742         return 0;
743 }
744
745 static int snd_saa7134_volume_put(struct snd_kcontrol * kcontrol,
746                                   struct snd_ctl_elem_value * ucontrol)
747 {
748         snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
749         struct saa7134_dev *dev = chip->dev;
750
751         int change, addr = kcontrol->private_value;
752         int left, right;
753
754         left = ucontrol->value.integer.value[0];
755         if (left < 0)
756                 left = 0;
757         if (left > 20)
758                 left = 20;
759         right = ucontrol->value.integer.value[1];
760         if (right < 0)
761                 right = 0;
762         if (right > 20)
763                 right = 20;
764         spin_lock_irq(&chip->mixer_lock);
765         change = 0;
766         if (chip->mixer_volume[addr][0] != left) {
767                 change = 1;
768                 right = left;
769         }
770         if (chip->mixer_volume[addr][1] != right) {
771                 change = 1;
772                 left = right;
773         }
774         if (change) {
775                 switch (dev->pci->device) {
776                         case PCI_DEVICE_ID_PHILIPS_SAA7134:
777                                 switch (addr) {
778                                         case MIXER_ADDR_TVTUNER:
779                                                 left = 20;
780                                                 break;
781                                         case MIXER_ADDR_LINE1:
782                                                 saa_andorb(SAA7134_ANALOG_IO_SELECT,  0x10,
783                                                            (left > 10) ? 0x00 : 0x10);
784                                                 break;
785                                         case MIXER_ADDR_LINE2:
786                                                 saa_andorb(SAA7134_ANALOG_IO_SELECT,  0x20,
787                                                            (left > 10) ? 0x00 : 0x20);
788                                                 break;
789                                 }
790                                 break;
791                         case PCI_DEVICE_ID_PHILIPS_SAA7133:
792                         case PCI_DEVICE_ID_PHILIPS_SAA7135:
793                                 switch (addr) {
794                                         case MIXER_ADDR_TVTUNER:
795                                                 left = 20;
796                                                 break;
797                                         case MIXER_ADDR_LINE1:
798                                                 saa_andorb(0x0594,  0x10,
799                                                            (left > 10) ? 0x00 : 0x10);
800                                                 break;
801                                         case MIXER_ADDR_LINE2:
802                                                 saa_andorb(0x0594,  0x20,
803                                                            (left > 10) ? 0x00 : 0x20);
804                                                 break;
805                                 }
806                                 break;
807                 }
808                 chip->mixer_volume[addr][0] = left;
809                 chip->mixer_volume[addr][1] = right;
810         }
811         spin_unlock_irq(&chip->mixer_lock);
812         return change;
813 }
814
815 #define SAA713x_CAPSRC(xname, xindex, addr) \
816 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
817   .info = snd_saa7134_capsrc_info, \
818   .get = snd_saa7134_capsrc_get, .put = snd_saa7134_capsrc_put, \
819   .private_value = addr }
820
821 static int snd_saa7134_capsrc_info(struct snd_kcontrol * kcontrol,
822                                    struct snd_ctl_elem_info * uinfo)
823 {
824         uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
825         uinfo->count = 2;
826         uinfo->value.integer.min = 0;
827         uinfo->value.integer.max = 1;
828         return 0;
829 }
830
831 static int snd_saa7134_capsrc_get(struct snd_kcontrol * kcontrol,
832                                   struct snd_ctl_elem_value * ucontrol)
833 {
834         snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
835         int addr = kcontrol->private_value;
836
837         spin_lock_irq(&chip->mixer_lock);
838         ucontrol->value.integer.value[0] = chip->capture_source[addr][0];
839         ucontrol->value.integer.value[1] = chip->capture_source[addr][1];
840         spin_unlock_irq(&chip->mixer_lock);
841
842         return 0;
843 }
844
845 static int snd_saa7134_capsrc_put(struct snd_kcontrol * kcontrol,
846                                   struct snd_ctl_elem_value * ucontrol)
847 {
848         snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
849         int change, addr = kcontrol->private_value;
850         int left, right;
851         u32 anabar, xbarin;
852         int analog_io, rate;
853         struct saa7134_dev *dev;
854
855         dev = chip->dev;
856
857         left = ucontrol->value.integer.value[0] & 1;
858         right = ucontrol->value.integer.value[1] & 1;
859         spin_lock_irq(&chip->mixer_lock);
860
861         change = chip->capture_source[addr][0] != left ||
862                  chip->capture_source[addr][1] != right;
863         chip->capture_source[addr][0] = left;
864         chip->capture_source[addr][1] = right;
865         dev->dmasound.input=addr;
866         spin_unlock_irq(&chip->mixer_lock);
867
868
869         if (change) {
870           switch (dev->pci->device) {
871
872            case PCI_DEVICE_ID_PHILIPS_SAA7134:
873                 switch (addr) {
874                         case MIXER_ADDR_TVTUNER:
875                                 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0xc0);
876                                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, 0x00);
877                                 break;
878                         case MIXER_ADDR_LINE1:
879                         case MIXER_ADDR_LINE2:
880                                 analog_io = (MIXER_ADDR_LINE1 == addr) ? 0x00 : 0x08;
881                                 rate = (32000 == dev->dmasound.rate) ? 0x01 : 0x03;
882                                 saa_andorb(SAA7134_ANALOG_IO_SELECT,  0x08, analog_io);
883                                 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0x80);
884                                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, rate);
885                                 break;
886                 }
887
888                 break;
889            case PCI_DEVICE_ID_PHILIPS_SAA7133:
890            case PCI_DEVICE_ID_PHILIPS_SAA7135:
891                 xbarin = 0x03; // adc
892                 anabar = 0;
893                 switch (addr) {
894                         case MIXER_ADDR_TVTUNER:
895                                 xbarin = 0; // Demodulator
896                                 anabar = 2; // DACs
897                                 break;
898                         case MIXER_ADDR_LINE1:
899                                 anabar = 0;  // aux1, aux1
900                                 break;
901                         case MIXER_ADDR_LINE2:
902                                 anabar = 9;  // aux2, aux2
903                                 break;
904                 }
905
906                 /* output xbar always main channel */
907                 saa_dsp_writel(dev, SAA7133_DIGITAL_OUTPUT_SEL1, 0xbbbb10);
908
909                 if (left || right) { // We've got data, turn the input on
910                   saa_dsp_writel(dev, SAA7133_DIGITAL_INPUT_XBAR1, xbarin);
911                   saa_writel(SAA7133_ANALOG_IO_SELECT, anabar);
912                 } else {
913                   saa_dsp_writel(dev, SAA7133_DIGITAL_INPUT_XBAR1, 0);
914                   saa_writel(SAA7133_ANALOG_IO_SELECT, 0);
915                 }
916                 break;
917           }
918         }
919
920         return change;
921 }
922
923 static struct snd_kcontrol_new snd_saa7134_controls[] = {
924 SAA713x_VOLUME("Video Volume", 0, MIXER_ADDR_TVTUNER),
925 SAA713x_CAPSRC("Video Capture Switch", 0, MIXER_ADDR_TVTUNER),
926 SAA713x_VOLUME("Line Volume", 1, MIXER_ADDR_LINE1),
927 SAA713x_CAPSRC("Line Capture Switch", 1, MIXER_ADDR_LINE1),
928 SAA713x_VOLUME("Line Volume", 2, MIXER_ADDR_LINE2),
929 SAA713x_CAPSRC("Line Capture Switch", 2, MIXER_ADDR_LINE2),
930 };
931
932 /*
933  * ALSA mixer setup
934  *
935  *   Called when initializing the board. Sets up the name and hooks up
936  *  the callbacks
937  *
938  */
939
940 static int snd_card_saa7134_new_mixer(snd_card_saa7134_t * chip)
941 {
942         struct snd_card *card = chip->card;
943         unsigned int idx;
944         int err;
945
946         snd_assert(chip != NULL, return -EINVAL);
947         strcpy(card->mixername, "SAA7134 Mixer");
948
949         for (idx = 0; idx < ARRAY_SIZE(snd_saa7134_controls); idx++) {
950                 if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_saa7134_controls[idx], chip))) < 0)
951                         return err;
952         }
953         return 0;
954 }
955
956 static void snd_saa7134_free(struct snd_card * card)
957 {
958         snd_card_saa7134_t *chip = card->private_data;
959
960         if (chip->dev->dmasound.priv_data == NULL)
961                 return;
962
963         if (chip->irq >= 0)
964                 free_irq(chip->irq, &chip->dev->dmasound);
965
966         chip->dev->dmasound.priv_data = NULL;
967
968 }
969
970 /*
971  * ALSA initialization
972  *
973  *   Called by the init routine, once for each saa7134 device present,
974  *  it creates the basic structures and registers the ALSA devices
975  *
976  */
977
978 static int alsa_card_saa7134_create(struct saa7134_dev *dev, int devnum)
979 {
980
981         struct snd_card *card;
982         snd_card_saa7134_t *chip;
983         int err;
984
985
986         if (devnum >= SNDRV_CARDS)
987                 return -ENODEV;
988         if (!enable[devnum])
989                 return -ENODEV;
990
991         card = snd_card_new(index[devnum], id[devnum], THIS_MODULE, sizeof(snd_card_saa7134_t));
992
993         if (card == NULL)
994                 return -ENOMEM;
995
996         strcpy(card->driver, "SAA7134");
997
998         /* Card "creation" */
999
1000         card->private_free = snd_saa7134_free;
1001         chip = (snd_card_saa7134_t *) card->private_data;
1002
1003         spin_lock_init(&chip->lock);
1004         spin_lock_init(&chip->mixer_lock);
1005
1006         chip->dev = dev;
1007
1008         chip->card = card;
1009
1010         chip->pci = dev->pci;
1011         chip->iobase = pci_resource_start(dev->pci, 0);
1012
1013
1014         err = request_irq(dev->pci->irq, saa7134_alsa_irq,
1015                                 IRQF_SHARED | IRQF_DISABLED, dev->name,
1016                                 (void*) &dev->dmasound);
1017
1018         if (err < 0) {
1019                 printk(KERN_ERR "%s: can't get IRQ %d for ALSA\n",
1020                         dev->name, dev->pci->irq);
1021                 goto __nodev;
1022         }
1023
1024         chip->irq = dev->pci->irq;
1025
1026         mutex_init(&dev->dmasound.lock);
1027
1028         if ((err = snd_card_saa7134_new_mixer(chip)) < 0)
1029                 goto __nodev;
1030
1031         if ((err = snd_card_saa7134_pcm(chip, 0)) < 0)
1032                 goto __nodev;
1033
1034         snd_card_set_dev(card, &chip->pci->dev);
1035
1036         /* End of "creation" */
1037
1038         strcpy(card->shortname, "SAA7134");
1039         sprintf(card->longname, "%s at 0x%lx irq %d",
1040                 chip->dev->name, chip->iobase, chip->irq);
1041
1042         printk(KERN_INFO "%s/alsa: %s registered as card %d\n",dev->name,card->longname,index[devnum]);
1043
1044         if ((err = snd_card_register(card)) == 0) {
1045                 snd_saa7134_cards[devnum] = card;
1046                 return 0;
1047         }
1048
1049 __nodev:
1050         snd_card_free(card);
1051         return err;
1052 }
1053
1054
1055 static int alsa_device_init(struct saa7134_dev *dev)
1056 {
1057         dev->dmasound.priv_data = dev;
1058         alsa_card_saa7134_create(dev,dev->nr);
1059         return 1;
1060 }
1061
1062 static int alsa_device_exit(struct saa7134_dev *dev)
1063 {
1064
1065         snd_card_free(snd_saa7134_cards[dev->nr]);
1066         snd_saa7134_cards[dev->nr] = NULL;
1067         return 1;
1068 }
1069
1070 /*
1071  * Module initializer
1072  *
1073  * Loops through present saa7134 cards, and assigns an ALSA device
1074  * to each one
1075  *
1076  */
1077
1078 static int saa7134_alsa_init(void)
1079 {
1080         struct saa7134_dev *dev = NULL;
1081         struct list_head *list;
1082
1083         saa7134_dmasound_init = alsa_device_init;
1084         saa7134_dmasound_exit = alsa_device_exit;
1085
1086         printk(KERN_INFO "saa7134 ALSA driver for DMA sound loaded\n");
1087
1088         list_for_each(list,&saa7134_devlist) {
1089                 dev = list_entry(list, struct saa7134_dev, devlist);
1090                 alsa_device_init(dev);
1091         }
1092
1093         if (dev == NULL)
1094                 printk(KERN_INFO "saa7134 ALSA: no saa7134 cards found\n");
1095
1096         return 0;
1097
1098 }
1099
1100 /*
1101  * Module destructor
1102  */
1103
1104 static void saa7134_alsa_exit(void)
1105 {
1106         int idx;
1107
1108         for (idx = 0; idx < SNDRV_CARDS; idx++) {
1109                 snd_card_free(snd_saa7134_cards[idx]);
1110         }
1111
1112         saa7134_dmasound_init = NULL;
1113         saa7134_dmasound_exit = NULL;
1114         printk(KERN_INFO "saa7134 ALSA driver for DMA sound unloaded\n");
1115
1116         return;
1117 }
1118
1119 /* We initialize this late, to make sure the sound system is up and running */
1120 late_initcall(saa7134_alsa_init);
1121 module_exit(saa7134_alsa_exit);
1122 MODULE_LICENSE("GPL");
1123 MODULE_AUTHOR("Ricardo Cerqueira");
1124
1125
1126