V4L/DVB (6079): Cleanup: remove linux/moduleparam.h from drivers/media files
[linux-2.6.git] / drivers / media / video / saa7134 / saa7134-alsa.c
1 /*
2  *   SAA713x ALSA support for V4L
3  *
4  *   This program is free software; you can redistribute it and/or modify
5  *   it under the terms of the GNU General Public License as published by
6  *   the Free Software Foundation, version 2
7  *
8  *   This program is distributed in the hope that it will be useful,
9  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
10  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11  *   GNU General Public License for more details.
12  *
13  *   You should have received a copy of the GNU General Public License
14  *   along with this program; if not, write to the Free Software
15  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
16  *
17  */
18
19 #include <linux/init.h>
20 #include <linux/slab.h>
21 #include <linux/time.h>
22 #include <linux/wait.h>
23 #include <linux/module.h>
24 #include <sound/driver.h>
25 #include <sound/core.h>
26 #include <sound/control.h>
27 #include <sound/pcm.h>
28 #include <sound/pcm_params.h>
29 #include <sound/initval.h>
30 #include <linux/interrupt.h>
31
32 #include "saa7134.h"
33 #include "saa7134-reg.h"
34
35 static unsigned int debug  = 0;
36 module_param(debug, int, 0644);
37 MODULE_PARM_DESC(debug,"enable debug messages [alsa]");
38
39 /*
40  * Configuration macros
41  */
42
43 /* defaults */
44 #define MIXER_ADDR_TVTUNER      0
45 #define MIXER_ADDR_LINE1        1
46 #define MIXER_ADDR_LINE2        2
47 #define MIXER_ADDR_LAST         2
48
49
50 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
51 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
52 static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 1};
53
54 module_param_array(index, int, NULL, 0444);
55 module_param_array(enable, int, NULL, 0444);
56 MODULE_PARM_DESC(index, "Index value for SAA7134 capture interface(s).");
57 MODULE_PARM_DESC(enable, "Enable (or not) the SAA7134 capture interface(s).");
58
59 #define dprintk(fmt, arg...)    if (debug) \
60         printk(KERN_DEBUG "%s/alsa: " fmt, dev->name , ##arg)
61
62
63
64 /*
65  * Main chip structure
66  */
67
68 typedef struct snd_card_saa7134 {
69         struct snd_card *card;
70         spinlock_t mixer_lock;
71         int mixer_volume[MIXER_ADDR_LAST+1][2];
72         int capture_source[MIXER_ADDR_LAST+1][2];
73         struct pci_dev *pci;
74         struct saa7134_dev *dev;
75
76         unsigned long iobase;
77         s16 irq;
78         u16 mute_was_on;
79
80         spinlock_t lock;
81 } snd_card_saa7134_t;
82
83
84
85 /*
86  * PCM structure
87  */
88
89 typedef struct snd_card_saa7134_pcm {
90         struct saa7134_dev *dev;
91
92         spinlock_t lock;
93
94         struct snd_pcm_substream *substream;
95 } snd_card_saa7134_pcm_t;
96
97 static struct snd_card *snd_saa7134_cards[SNDRV_CARDS];
98
99
100 /*
101  * saa7134 DMA audio stop
102  *
103  *   Called when the capture device is released or the buffer overflows
104  *
105  *   - Copied verbatim from saa7134-oss's dsp_dma_stop.
106  *
107  */
108
109 static void saa7134_dma_stop(struct saa7134_dev *dev)
110 {
111         dev->dmasound.dma_blk     = -1;
112         dev->dmasound.dma_running = 0;
113         saa7134_set_dmabits(dev);
114 }
115
116 /*
117  * saa7134 DMA audio start
118  *
119  *   Called when preparing the capture device for use
120  *
121  *   - Copied verbatim from saa7134-oss's dsp_dma_start.
122  *
123  */
124
125 static void saa7134_dma_start(struct saa7134_dev *dev)
126 {
127         dev->dmasound.dma_blk     = 0;
128         dev->dmasound.dma_running = 1;
129         saa7134_set_dmabits(dev);
130 }
131
132 /*
133  * saa7134 audio DMA IRQ handler
134  *
135  *   Called whenever we get an SAA7134_IRQ_REPORT_DONE_RA3 interrupt
136  *   Handles shifting between the 2 buffers, manages the read counters,
137  *  and notifies ALSA when periods elapse
138  *
139  *   - Mostly copied from saa7134-oss's saa7134_irq_oss_done.
140  *
141  */
142
143 static void saa7134_irq_alsa_done(struct saa7134_dev *dev,
144                                   unsigned long status)
145 {
146         int next_blk, reg = 0;
147
148         spin_lock(&dev->slock);
149         if (UNSET == dev->dmasound.dma_blk) {
150                 dprintk("irq: recording stopped\n");
151                 goto done;
152         }
153         if (0 != (status & 0x0f000000))
154                 dprintk("irq: lost %ld\n", (status >> 24) & 0x0f);
155         if (0 == (status & 0x10000000)) {
156                 /* odd */
157                 if (0 == (dev->dmasound.dma_blk & 0x01))
158                         reg = SAA7134_RS_BA1(6);
159         } else {
160                 /* even */
161                 if (1 == (dev->dmasound.dma_blk & 0x01))
162                         reg = SAA7134_RS_BA2(6);
163         }
164         if (0 == reg) {
165                 dprintk("irq: field oops [%s]\n",
166                         (status & 0x10000000) ? "even" : "odd");
167                 goto done;
168         }
169
170         if (dev->dmasound.read_count >= dev->dmasound.blksize * (dev->dmasound.blocks-2)) {
171                 dprintk("irq: overrun [full=%d/%d] - Blocks in %d\n",dev->dmasound.read_count,
172                         dev->dmasound.bufsize, dev->dmasound.blocks);
173                 spin_unlock(&dev->slock);
174                 snd_pcm_stop(dev->dmasound.substream,SNDRV_PCM_STATE_XRUN);
175                 return;
176         }
177
178         /* next block addr */
179         next_blk = (dev->dmasound.dma_blk + 2) % dev->dmasound.blocks;
180         saa_writel(reg,next_blk * dev->dmasound.blksize);
181         if (debug > 2)
182                 dprintk("irq: ok, %s, next_blk=%d, addr=%x, blocks=%u, size=%u, read=%u\n",
183                         (status & 0x10000000) ? "even" : "odd ", next_blk,
184                         next_blk * dev->dmasound.blksize, dev->dmasound.blocks, dev->dmasound.blksize, dev->dmasound.read_count);
185
186         /* update status & wake waiting readers */
187         dev->dmasound.dma_blk = (dev->dmasound.dma_blk + 1) % dev->dmasound.blocks;
188         dev->dmasound.read_count += dev->dmasound.blksize;
189
190         dev->dmasound.recording_on = reg;
191
192         if (dev->dmasound.read_count >= snd_pcm_lib_period_bytes(dev->dmasound.substream)) {
193                 spin_unlock(&dev->slock);
194                 snd_pcm_period_elapsed(dev->dmasound.substream);
195                 spin_lock(&dev->slock);
196         }
197
198  done:
199         spin_unlock(&dev->slock);
200
201 }
202
203 /*
204  * IRQ request handler
205  *
206  *   Runs along with saa7134's IRQ handler, discards anything that isn't
207  *   DMA sound
208  *
209  */
210
211 static irqreturn_t saa7134_alsa_irq(int irq, void *dev_id)
212 {
213         struct saa7134_dmasound *dmasound = dev_id;
214         struct saa7134_dev *dev = dmasound->priv_data;
215
216         unsigned long report, status;
217         int loop, handled = 0;
218
219         for (loop = 0; loop < 10; loop++) {
220                 report = saa_readl(SAA7134_IRQ_REPORT);
221                 status = saa_readl(SAA7134_IRQ_STATUS);
222
223                 if (report & SAA7134_IRQ_REPORT_DONE_RA3) {
224                         handled = 1;
225                         saa_writel(SAA7134_IRQ_REPORT,report);
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 =          2,
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 >= 2, 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_pci_dma_unmap(dev->pci, &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_pci_dma_map(dev->pci, &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_pci_dma_unmap(dev->pci, &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_pci_dma_unmap(dev->pci, &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
547         return 1;
548
549 }
550
551 /*
552  * ALSA hardware release
553  *
554  *   - One of the ALSA capture callbacks.
555  *
556  *   Called after closing the device, but before snd_card_saa7134_capture_close
557  *   It stops the DMA audio and releases the buffers.
558  *
559  */
560
561 static int snd_card_saa7134_hw_free(struct snd_pcm_substream * substream)
562 {
563         snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
564         struct saa7134_dev *dev;
565
566         dev = saa7134->dev;
567
568         if (substream->runtime->dma_area) {
569                 saa7134_pgtable_free(dev->pci, &dev->dmasound.pt);
570                 videobuf_pci_dma_unmap(dev->pci, &dev->dmasound.dma);
571                 dsp_buffer_free(dev);
572                 substream->runtime->dma_area = NULL;
573         }
574
575         return 0;
576 }
577
578 /*
579  * ALSA capture finish
580  *
581  *   - One of the ALSA capture callbacks.
582  *
583  *   Called after closing the device.
584  *
585  */
586
587 static int snd_card_saa7134_capture_close(struct snd_pcm_substream * substream)
588 {
589         snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
590         struct saa7134_dev *dev = saa7134->dev;
591
592         if (saa7134->mute_was_on) {
593                 dev->ctl_mute = 1;
594                 saa7134_tvaudio_setmute(dev);
595         }
596         return 0;
597 }
598
599 /*
600  * ALSA capture start
601  *
602  *   - One of the ALSA capture callbacks.
603  *
604  *   Called when opening the device. It creates and populates the PCM
605  *  structure
606  *
607  */
608
609 static int snd_card_saa7134_capture_open(struct snd_pcm_substream * substream)
610 {
611         struct snd_pcm_runtime *runtime = substream->runtime;
612         snd_card_saa7134_pcm_t *pcm;
613         snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
614         struct saa7134_dev *dev = saa7134->dev;
615         int amux, err;
616
617         mutex_lock(&dev->dmasound.lock);
618
619         dev->dmasound.read_count  = 0;
620         dev->dmasound.read_offset = 0;
621
622         amux = dev->input->amux;
623         if ((amux < 1) || (amux > 3))
624                 amux = 1;
625         dev->dmasound.input  =  amux - 1;
626
627         mutex_unlock(&dev->dmasound.lock);
628
629         pcm = kzalloc(sizeof(*pcm), GFP_KERNEL);
630         if (pcm == NULL)
631                 return -ENOMEM;
632
633         pcm->dev=saa7134->dev;
634
635         spin_lock_init(&pcm->lock);
636
637         pcm->substream = substream;
638         runtime->private_data = pcm;
639         runtime->private_free = snd_card_saa7134_runtime_free;
640         runtime->hw = snd_card_saa7134_capture;
641
642         if (dev->ctl_mute != 0) {
643                 saa7134->mute_was_on = 1;
644                 dev->ctl_mute = 0;
645                 saa7134_tvaudio_setmute(dev);
646         }
647
648         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
649                 return err;
650
651         return 0;
652 }
653
654 /*
655  * ALSA capture callbacks definition
656  */
657
658 static struct snd_pcm_ops snd_card_saa7134_capture_ops = {
659         .open =                 snd_card_saa7134_capture_open,
660         .close =                snd_card_saa7134_capture_close,
661         .ioctl =                snd_pcm_lib_ioctl,
662         .hw_params =            snd_card_saa7134_hw_params,
663         .hw_free =              snd_card_saa7134_hw_free,
664         .prepare =              snd_card_saa7134_capture_prepare,
665         .trigger =              snd_card_saa7134_capture_trigger,
666         .pointer =              snd_card_saa7134_capture_pointer,
667 };
668
669 /*
670  * ALSA PCM setup
671  *
672  *   Called when initializing the board. Sets up the name and hooks up
673  *  the callbacks
674  *
675  */
676
677 static int snd_card_saa7134_pcm(snd_card_saa7134_t *saa7134, int device)
678 {
679         struct snd_pcm *pcm;
680         int err;
681
682         if ((err = snd_pcm_new(saa7134->card, "SAA7134 PCM", device, 0, 1, &pcm)) < 0)
683                 return err;
684         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_card_saa7134_capture_ops);
685         pcm->private_data = saa7134;
686         pcm->info_flags = 0;
687         strcpy(pcm->name, "SAA7134 PCM");
688         return 0;
689 }
690
691 #define SAA713x_VOLUME(xname, xindex, addr) \
692 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
693   .info = snd_saa7134_volume_info, \
694   .get = snd_saa7134_volume_get, .put = snd_saa7134_volume_put, \
695   .private_value = addr }
696
697 static int snd_saa7134_volume_info(struct snd_kcontrol * kcontrol,
698                                    struct snd_ctl_elem_info * uinfo)
699 {
700         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
701         uinfo->count = 2;
702         uinfo->value.integer.min = 0;
703         uinfo->value.integer.max = 20;
704         return 0;
705 }
706
707 static int snd_saa7134_volume_get(struct snd_kcontrol * kcontrol,
708                                   struct snd_ctl_elem_value * ucontrol)
709 {
710         snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
711         int addr = kcontrol->private_value;
712
713         ucontrol->value.integer.value[0] = chip->mixer_volume[addr][0];
714         ucontrol->value.integer.value[1] = chip->mixer_volume[addr][1];
715         return 0;
716 }
717
718 static int snd_saa7134_volume_put(struct snd_kcontrol * kcontrol,
719                                   struct snd_ctl_elem_value * ucontrol)
720 {
721         snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
722         struct saa7134_dev *dev = chip->dev;
723
724         int change, addr = kcontrol->private_value;
725         int left, right;
726
727         left = ucontrol->value.integer.value[0];
728         if (left < 0)
729                 left = 0;
730         if (left > 20)
731                 left = 20;
732         right = ucontrol->value.integer.value[1];
733         if (right < 0)
734                 right = 0;
735         if (right > 20)
736                 right = 20;
737         spin_lock_irq(&chip->mixer_lock);
738         change = 0;
739         if (chip->mixer_volume[addr][0] != left) {
740                 change = 1;
741                 right = left;
742         }
743         if (chip->mixer_volume[addr][1] != right) {
744                 change = 1;
745                 left = right;
746         }
747         if (change) {
748                 switch (dev->pci->device) {
749                         case PCI_DEVICE_ID_PHILIPS_SAA7134:
750                                 switch (addr) {
751                                         case MIXER_ADDR_TVTUNER:
752                                                 left = 20;
753                                                 break;
754                                         case MIXER_ADDR_LINE1:
755                                                 saa_andorb(SAA7134_ANALOG_IO_SELECT,  0x10,
756                                                            (left > 10) ? 0x00 : 0x10);
757                                                 break;
758                                         case MIXER_ADDR_LINE2:
759                                                 saa_andorb(SAA7134_ANALOG_IO_SELECT,  0x20,
760                                                            (left > 10) ? 0x00 : 0x20);
761                                                 break;
762                                 }
763                                 break;
764                         case PCI_DEVICE_ID_PHILIPS_SAA7133:
765                         case PCI_DEVICE_ID_PHILIPS_SAA7135:
766                                 switch (addr) {
767                                         case MIXER_ADDR_TVTUNER:
768                                                 left = 20;
769                                                 break;
770                                         case MIXER_ADDR_LINE1:
771                                                 saa_andorb(0x0594,  0x10,
772                                                            (left > 10) ? 0x00 : 0x10);
773                                                 break;
774                                         case MIXER_ADDR_LINE2:
775                                                 saa_andorb(0x0594,  0x20,
776                                                            (left > 10) ? 0x00 : 0x20);
777                                                 break;
778                                 }
779                                 break;
780                 }
781                 chip->mixer_volume[addr][0] = left;
782                 chip->mixer_volume[addr][1] = right;
783         }
784         spin_unlock_irq(&chip->mixer_lock);
785         return change;
786 }
787
788 #define SAA713x_CAPSRC(xname, xindex, addr) \
789 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
790   .info = snd_saa7134_capsrc_info, \
791   .get = snd_saa7134_capsrc_get, .put = snd_saa7134_capsrc_put, \
792   .private_value = addr }
793
794 static int snd_saa7134_capsrc_info(struct snd_kcontrol * kcontrol,
795                                    struct snd_ctl_elem_info * uinfo)
796 {
797         uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
798         uinfo->count = 2;
799         uinfo->value.integer.min = 0;
800         uinfo->value.integer.max = 1;
801         return 0;
802 }
803
804 static int snd_saa7134_capsrc_get(struct snd_kcontrol * kcontrol,
805                                   struct snd_ctl_elem_value * ucontrol)
806 {
807         snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
808         int addr = kcontrol->private_value;
809
810         spin_lock_irq(&chip->mixer_lock);
811         ucontrol->value.integer.value[0] = chip->capture_source[addr][0];
812         ucontrol->value.integer.value[1] = chip->capture_source[addr][1];
813         spin_unlock_irq(&chip->mixer_lock);
814
815         return 0;
816 }
817
818 static int snd_saa7134_capsrc_put(struct snd_kcontrol * kcontrol,
819                                   struct snd_ctl_elem_value * ucontrol)
820 {
821         snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
822         int change, addr = kcontrol->private_value;
823         int left, right;
824         u32 anabar, xbarin;
825         int analog_io, rate;
826         struct saa7134_dev *dev;
827
828         dev = chip->dev;
829
830         left = ucontrol->value.integer.value[0] & 1;
831         right = ucontrol->value.integer.value[1] & 1;
832         spin_lock_irq(&chip->mixer_lock);
833
834         change = chip->capture_source[addr][0] != left ||
835                  chip->capture_source[addr][1] != right;
836         chip->capture_source[addr][0] = left;
837         chip->capture_source[addr][1] = right;
838         dev->dmasound.input=addr;
839         spin_unlock_irq(&chip->mixer_lock);
840
841
842         if (change) {
843           switch (dev->pci->device) {
844
845            case PCI_DEVICE_ID_PHILIPS_SAA7134:
846                 switch (addr) {
847                         case MIXER_ADDR_TVTUNER:
848                                 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0xc0);
849                                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, 0x00);
850                                 break;
851                         case MIXER_ADDR_LINE1:
852                         case MIXER_ADDR_LINE2:
853                                 analog_io = (MIXER_ADDR_LINE1 == addr) ? 0x00 : 0x08;
854                                 rate = (32000 == dev->dmasound.rate) ? 0x01 : 0x03;
855                                 saa_andorb(SAA7134_ANALOG_IO_SELECT,  0x08, analog_io);
856                                 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0x80);
857                                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, rate);
858                                 break;
859                 }
860
861                 break;
862            case PCI_DEVICE_ID_PHILIPS_SAA7133:
863            case PCI_DEVICE_ID_PHILIPS_SAA7135:
864                 xbarin = 0x03; // adc
865                 anabar = 0;
866                 switch (addr) {
867                         case MIXER_ADDR_TVTUNER:
868                                 xbarin = 0; // Demodulator
869                                 anabar = 2; // DACs
870                                 break;
871                         case MIXER_ADDR_LINE1:
872                                 anabar = 0;  // aux1, aux1
873                                 break;
874                         case MIXER_ADDR_LINE2:
875                                 anabar = 9;  // aux2, aux2
876                                 break;
877                 }
878
879                 /* output xbar always main channel */
880                 saa_dsp_writel(dev, SAA7133_DIGITAL_OUTPUT_SEL1, 0xbbbb10);
881
882                 if (left || right) { // We've got data, turn the input on
883                   saa_dsp_writel(dev, SAA7133_DIGITAL_INPUT_XBAR1, xbarin);
884                   saa_writel(SAA7133_ANALOG_IO_SELECT, anabar);
885                 } else {
886                   saa_dsp_writel(dev, SAA7133_DIGITAL_INPUT_XBAR1, 0);
887                   saa_writel(SAA7133_ANALOG_IO_SELECT, 0);
888                 }
889                 break;
890           }
891         }
892
893         return change;
894 }
895
896 static struct snd_kcontrol_new snd_saa7134_controls[] = {
897 SAA713x_VOLUME("Video Volume", 0, MIXER_ADDR_TVTUNER),
898 SAA713x_CAPSRC("Video Capture Switch", 0, MIXER_ADDR_TVTUNER),
899 SAA713x_VOLUME("Line Volume", 1, MIXER_ADDR_LINE1),
900 SAA713x_CAPSRC("Line Capture Switch", 1, MIXER_ADDR_LINE1),
901 SAA713x_VOLUME("Line Volume", 2, MIXER_ADDR_LINE2),
902 SAA713x_CAPSRC("Line Capture Switch", 2, MIXER_ADDR_LINE2),
903 };
904
905 /*
906  * ALSA mixer setup
907  *
908  *   Called when initializing the board. Sets up the name and hooks up
909  *  the callbacks
910  *
911  */
912
913 static int snd_card_saa7134_new_mixer(snd_card_saa7134_t * chip)
914 {
915         struct snd_card *card = chip->card;
916         unsigned int idx;
917         int err;
918
919         snd_assert(chip != NULL, return -EINVAL);
920         strcpy(card->mixername, "SAA7134 Mixer");
921
922         for (idx = 0; idx < ARRAY_SIZE(snd_saa7134_controls); idx++) {
923                 if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_saa7134_controls[idx], chip))) < 0)
924                         return err;
925         }
926         return 0;
927 }
928
929 static void snd_saa7134_free(struct snd_card * card)
930 {
931         snd_card_saa7134_t *chip = card->private_data;
932
933         if (chip->dev->dmasound.priv_data == NULL)
934                 return;
935
936         if (chip->irq >= 0) {
937                 synchronize_irq(chip->irq);
938                 free_irq(chip->irq, &chip->dev->dmasound);
939         }
940
941         chip->dev->dmasound.priv_data = NULL;
942
943 }
944
945 /*
946  * ALSA initialization
947  *
948  *   Called by the init routine, once for each saa7134 device present,
949  *  it creates the basic structures and registers the ALSA devices
950  *
951  */
952
953 static int alsa_card_saa7134_create(struct saa7134_dev *dev, int devnum)
954 {
955
956         struct snd_card *card;
957         snd_card_saa7134_t *chip;
958         int err;
959
960
961         if (devnum >= SNDRV_CARDS)
962                 return -ENODEV;
963         if (!enable[devnum])
964                 return -ENODEV;
965
966         card = snd_card_new(index[devnum], id[devnum], THIS_MODULE, sizeof(snd_card_saa7134_t));
967
968         if (card == NULL)
969                 return -ENOMEM;
970
971         strcpy(card->driver, "SAA7134");
972
973         /* Card "creation" */
974
975         card->private_free = snd_saa7134_free;
976         chip = (snd_card_saa7134_t *) card->private_data;
977
978         spin_lock_init(&chip->lock);
979         spin_lock_init(&chip->mixer_lock);
980
981         chip->dev = dev;
982
983         chip->card = card;
984
985         chip->pci = dev->pci;
986         chip->iobase = pci_resource_start(dev->pci, 0);
987
988
989         err = request_irq(dev->pci->irq, saa7134_alsa_irq,
990                                 IRQF_SHARED | IRQF_DISABLED, dev->name,
991                                 (void*) &dev->dmasound);
992
993         if (err < 0) {
994                 printk(KERN_ERR "%s: can't get IRQ %d for ALSA\n",
995                         dev->name, dev->pci->irq);
996                 goto __nodev;
997         }
998
999         chip->irq = dev->pci->irq;
1000
1001         mutex_init(&dev->dmasound.lock);
1002
1003         if ((err = snd_card_saa7134_new_mixer(chip)) < 0)
1004                 goto __nodev;
1005
1006         if ((err = snd_card_saa7134_pcm(chip, 0)) < 0)
1007                 goto __nodev;
1008
1009         snd_card_set_dev(card, &chip->pci->dev);
1010
1011         /* End of "creation" */
1012
1013         strcpy(card->shortname, "SAA7134");
1014         sprintf(card->longname, "%s at 0x%lx irq %d",
1015                 chip->dev->name, chip->iobase, chip->irq);
1016
1017         printk(KERN_INFO "%s/alsa: %s registered as card %d\n",dev->name,card->longname,index[devnum]);
1018
1019         if ((err = snd_card_register(card)) == 0) {
1020                 snd_saa7134_cards[devnum] = card;
1021                 return 0;
1022         }
1023
1024 __nodev:
1025         snd_card_free(card);
1026         return err;
1027 }
1028
1029
1030 static int alsa_device_init(struct saa7134_dev *dev)
1031 {
1032         dev->dmasound.priv_data = dev;
1033         alsa_card_saa7134_create(dev,dev->nr);
1034         return 1;
1035 }
1036
1037 static int alsa_device_exit(struct saa7134_dev *dev)
1038 {
1039
1040         snd_card_free(snd_saa7134_cards[dev->nr]);
1041         snd_saa7134_cards[dev->nr] = NULL;
1042         return 1;
1043 }
1044
1045 /*
1046  * Module initializer
1047  *
1048  * Loops through present saa7134 cards, and assigns an ALSA device
1049  * to each one
1050  *
1051  */
1052
1053 static int saa7134_alsa_init(void)
1054 {
1055         struct saa7134_dev *dev = NULL;
1056         struct list_head *list;
1057
1058         if (!saa7134_dmasound_init && !saa7134_dmasound_exit) {
1059                 saa7134_dmasound_init = alsa_device_init;
1060                 saa7134_dmasound_exit = alsa_device_exit;
1061         } else {
1062                 printk(KERN_WARNING "saa7134 ALSA: can't load, DMA sound handler already assigned (probably to OSS)\n");
1063                 return -EBUSY;
1064         }
1065
1066         printk(KERN_INFO "saa7134 ALSA driver for DMA sound loaded\n");
1067
1068         list_for_each(list,&saa7134_devlist) {
1069                 dev = list_entry(list, struct saa7134_dev, devlist);
1070                 if (dev->dmasound.priv_data == NULL) {
1071                         alsa_device_init(dev);
1072                 } else {
1073                         printk(KERN_ERR "saa7134 ALSA: DMA sound is being handled by OSS. ignoring %s\n",dev->name);
1074                         return -EBUSY;
1075                 }
1076         }
1077
1078         if (dev == NULL)
1079                 printk(KERN_INFO "saa7134 ALSA: no saa7134 cards found\n");
1080
1081         return 0;
1082
1083 }
1084
1085 /*
1086  * Module destructor
1087  */
1088
1089 static void saa7134_alsa_exit(void)
1090 {
1091         int idx;
1092
1093         for (idx = 0; idx < SNDRV_CARDS; idx++) {
1094                 snd_card_free(snd_saa7134_cards[idx]);
1095         }
1096
1097         saa7134_dmasound_init = NULL;
1098         saa7134_dmasound_exit = NULL;
1099         printk(KERN_INFO "saa7134 ALSA driver for DMA sound unloaded\n");
1100
1101         return;
1102 }
1103
1104 /* We initialize this late, to make sure the sound system is up and running */
1105 late_initcall(saa7134_alsa_init);
1106 module_exit(saa7134_alsa_exit);
1107 MODULE_LICENSE("GPL");
1108 MODULE_AUTHOR("Ricardo Cerqueira");
1109
1110
1111