[PATCH] v4l: 975: apply saa7134-alsa fixes
[linux-2.6.git] / drivers / media / video / saa7134 / saa7134-alsa.c
1 /*
2  *   SAA713x ALSA support for V4L
3  *
4  *
5  *   Caveats:
6  *        - Volume doesn't work (it's always at max)
7  *
8  *   This program is free software; you can redistribute it and/or modify
9  *   it under the terms of the GNU General Public License as published by
10  *   the Free Software Foundation, version 2
11  *
12  *   This program is distributed in the hope that it will be useful,
13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  *   GNU General Public License for more details.
16  *
17  *   You should have received a copy of the GNU General Public License
18  *   along with this program; if not, write to the Free Software
19  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
20  *
21  */
22
23 #include <sound/driver.h>
24 #include <linux/init.h>
25 #include <linux/slab.h>
26 #include <linux/time.h>
27 #include <linux/wait.h>
28 #include <linux/moduleparam.h>
29 #include <linux/module.h>
30 #include <sound/core.h>
31 #include <sound/control.h>
32 #include <sound/pcm.h>
33 #include <sound/pcm_params.h>
34 #include <sound/initval.h>
35 #include <linux/interrupt.h>
36
37 #include "saa7134.h"
38 #include "saa7134-reg.h"
39
40 static unsigned int debug  = 0;
41 module_param(debug, int, 0644);
42 MODULE_PARM_DESC(debug,"enable debug messages [alsa]");
43
44 /*
45  * Configuration macros
46  */
47
48 /* defaults */
49 #define MIXER_ADDR_TVTUNER      0
50 #define MIXER_ADDR_LINE1        1
51 #define MIXER_ADDR_LINE2        2
52 #define MIXER_ADDR_LAST         2
53
54 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
55 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
56 static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 0};
57
58 module_param_array(index, int, NULL, 0444);
59 MODULE_PARM_DESC(index, "Index value for SAA7134 capture interface(s).");
60
61 int position;
62
63 #define dprintk(fmt, arg...)    if (debug) \
64         printk(KERN_DEBUG "%s/alsa: " fmt, dev->name , ## arg)
65
66 /*
67  * Main chip structure
68  */
69 typedef struct snd_card_saa7134 {
70         snd_card_t *card;
71         spinlock_t mixer_lock;
72         int mixer_volume[MIXER_ADDR_LAST+1][2];
73         int capture_source[MIXER_ADDR_LAST+1][2];
74         struct pci_dev *pci;
75         struct saa7134_dev *dev;
76
77         unsigned long iobase;
78         int irq;
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         snd_pcm_substream_t *substream;
95 } snd_card_saa7134_pcm_t;
96
97 static snd_card_t *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 void saa7134_irq_alsa_done(struct saa7134_dev *dev, 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, struct pt_regs *regs)
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,report);
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(snd_pcm_substream_t * substream,
250                                           int cmd)
251 {
252         snd_pcm_runtime_t *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         if (!dev->dmasound.blksize)
307                 BUG();
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(snd_pcm_substream_t * substream)
332 {
333         snd_pcm_runtime_t *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 snd_card_saa7134_capture_pointer(snd_pcm_substream_t * substream)
421 {
422         snd_pcm_runtime_t *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 snd_pcm_hardware_t 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 =          2,
460         .periods_max =          1024,
461 };
462
463 static void snd_card_saa7134_runtime_free(snd_pcm_runtime_t *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(snd_pcm_substream_t * substream,
481                                     snd_pcm_hw_params_t * 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         snd_assert(period_size >= 0x100 && period_size <= 0x10000,
492                    return -EINVAL);
493         snd_assert(periods >= 2, return -EINVAL);
494         snd_assert(period_size * periods <= 1024 * 1024, return -EINVAL);
495
496         dev = saa7134->dev;
497
498         if (dev->dmasound.blocks == periods &&
499             dev->dmasound.blksize == period_size)
500                 return 0;
501
502         /* release the old buffer */
503         if (substream->runtime->dma_area) {
504                 saa7134_pgtable_free(dev->pci, &dev->dmasound.pt);
505                 videobuf_dma_pci_unmap(dev->pci, &dev->dmasound.dma);
506                 dsp_buffer_free(dev);
507                 substream->runtime->dma_area = NULL;
508         }
509         dev->dmasound.blocks  = periods;
510         dev->dmasound.blksize = period_size;
511         dev->dmasound.bufsize = period_size * periods;
512
513         err = dsp_buffer_init(dev);
514         if (0 != err) {
515                 dev->dmasound.blocks  = 0;
516                 dev->dmasound.blksize = 0;
517                 dev->dmasound.bufsize = 0;
518                 return err;
519         }
520
521         if (0 != (err = videobuf_dma_pci_map(dev->pci, &dev->dmasound.dma))) {
522                 dsp_buffer_free(dev);
523                 return err;
524         }
525         if (0 != (err = saa7134_pgtable_alloc(dev->pci,&dev->dmasound.pt))) {
526                 videobuf_dma_pci_unmap(dev->pci, &dev->dmasound.dma);
527                 dsp_buffer_free(dev);
528                 return err;
529         }
530         if (0 != (err = saa7134_pgtable_build(dev->pci,&dev->dmasound.pt,
531                                                 dev->dmasound.dma.sglist,
532                                                 dev->dmasound.dma.sglen,
533                                                 0))) {
534                 saa7134_pgtable_free(dev->pci, &dev->dmasound.pt);
535                 videobuf_dma_pci_unmap(dev->pci, &dev->dmasound.dma);
536                 dsp_buffer_free(dev);
537                 return err;
538         }
539
540         /* I should be able to use runtime->dma_addr in the control
541            byte, but it doesn't work. So I allocate the DMA using the
542            V4L functions, and force ALSA to use that as the DMA area */
543
544         substream->runtime->dma_area = dev->dmasound.dma.vmalloc;
545
546         return 1;
547
548 }
549
550 /*
551  * ALSA hardware release
552  *
553  *   - One of the ALSA capture callbacks.
554  *
555  *   Called after closing the device, but before snd_card_saa7134_capture_close
556  *   It stops the DMA audio and releases the buffers.
557  *
558  */
559
560 static int snd_card_saa7134_hw_free(snd_pcm_substream_t * substream)
561 {
562         snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
563         struct saa7134_dev *dev;
564
565         dev = saa7134->dev;
566
567         if (substream->runtime->dma_area) {
568                 saa7134_pgtable_free(dev->pci, &dev->dmasound.pt);
569                 videobuf_dma_pci_unmap(dev->pci, &dev->dmasound.dma);
570                 dsp_buffer_free(dev);
571                 substream->runtime->dma_area = NULL;
572         }
573
574         return 0;
575 }
576
577 /*
578  * ALSA capture finish
579  *
580  *   - One of the ALSA capture callbacks.
581  *
582  *   Called after closing the device.
583  *
584  */
585
586 static int snd_card_saa7134_capture_close(snd_pcm_substream_t * substream)
587 {
588         return 0;
589 }
590
591 /*
592  * ALSA capture start
593  *
594  *   - One of the ALSA capture callbacks.
595  *
596  *   Called when opening the device. It creates and populates the PCM
597  *  structure
598  *
599  */
600
601 static int snd_card_saa7134_capture_open(snd_pcm_substream_t * substream)
602 {
603         snd_pcm_runtime_t *runtime = substream->runtime;
604         snd_card_saa7134_pcm_t *pcm;
605         snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
606         struct saa7134_dev *dev = saa7134->dev;
607         int err;
608
609         down(&dev->dmasound.lock);
610
611         dev->dmasound.read_count  = 0;
612         dev->dmasound.read_offset = 0;
613
614         up(&dev->dmasound.lock);
615
616         pcm = kzalloc(sizeof(*pcm), GFP_KERNEL);
617         if (pcm == NULL)
618                 return -ENOMEM;
619
620         pcm->dev=saa7134->dev;
621
622         spin_lock_init(&pcm->lock);
623
624         pcm->substream = substream;
625         runtime->private_data = pcm;
626         runtime->private_free = snd_card_saa7134_runtime_free;
627         runtime->hw = snd_card_saa7134_capture;
628
629         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
630                 return err;
631
632         return 0;
633 }
634
635 /*
636  * ALSA capture callbacks definition
637  */
638
639 static snd_pcm_ops_t snd_card_saa7134_capture_ops = {
640         .open =                 snd_card_saa7134_capture_open,
641         .close =                snd_card_saa7134_capture_close,
642         .ioctl =                snd_pcm_lib_ioctl,
643         .hw_params =            snd_card_saa7134_hw_params,
644         .hw_free =              snd_card_saa7134_hw_free,
645         .prepare =              snd_card_saa7134_capture_prepare,
646         .trigger =              snd_card_saa7134_capture_trigger,
647         .pointer =              snd_card_saa7134_capture_pointer,
648 };
649
650 /*
651  * ALSA PCM setup
652  *
653  *   Called when initializing the board. Sets up the name and hooks up
654  *  the callbacks
655  *
656  */
657
658 static int snd_card_saa7134_pcm(snd_card_saa7134_t *saa7134, int device)
659 {
660         snd_pcm_t *pcm;
661         int err;
662
663         if ((err = snd_pcm_new(saa7134->card, "SAA7134 PCM", device, 0, 1, &pcm)) < 0)
664                 return err;
665         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_card_saa7134_capture_ops);
666         pcm->private_data = saa7134;
667         pcm->info_flags = 0;
668         strcpy(pcm->name, "SAA7134 PCM");
669         return 0;
670 }
671
672 #define SAA713x_VOLUME(xname, xindex, addr) \
673 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
674   .info = snd_saa7134_volume_info, \
675   .get = snd_saa7134_volume_get, .put = snd_saa7134_volume_put, \
676   .private_value = addr }
677
678 static int snd_saa7134_volume_info(snd_kcontrol_t * kcontrol, snd_ctl_elem_info_t * uinfo)
679 {
680         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
681         uinfo->count = 2;
682         uinfo->value.integer.min = 0;
683         uinfo->value.integer.max = 20;
684         return 0;
685 }
686
687 static int snd_saa7134_volume_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
688 {
689         snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
690         int addr = kcontrol->private_value;
691
692         ucontrol->value.integer.value[0] = chip->mixer_volume[addr][0];
693         ucontrol->value.integer.value[1] = chip->mixer_volume[addr][1];
694         return 0;
695 }
696
697 static int snd_saa7134_volume_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
698 {
699         snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
700         int change, addr = kcontrol->private_value;
701         int left, right;
702
703         left = ucontrol->value.integer.value[0];
704         if (left < 0)
705                 left = 0;
706         if (left > 20)
707                 left = 20;
708         right = ucontrol->value.integer.value[1];
709         if (right < 0)
710                 right = 0;
711         if (right > 20)
712                 right = 20;
713         spin_lock_irq(&chip->mixer_lock);
714         change = chip->mixer_volume[addr][0] != left ||
715                  chip->mixer_volume[addr][1] != right;
716         chip->mixer_volume[addr][0] = left;
717         chip->mixer_volume[addr][1] = right;
718         spin_unlock_irq(&chip->mixer_lock);
719         return change;
720 }
721
722 #define SAA713x_CAPSRC(xname, xindex, addr) \
723 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
724   .info = snd_saa7134_capsrc_info, \
725   .get = snd_saa7134_capsrc_get, .put = snd_saa7134_capsrc_put, \
726   .private_value = addr }
727
728 static int snd_saa7134_capsrc_info(snd_kcontrol_t * kcontrol, snd_ctl_elem_info_t * uinfo)
729 {
730         uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
731         uinfo->count = 2;
732         uinfo->value.integer.min = 0;
733         uinfo->value.integer.max = 1;
734         return 0;
735 }
736
737 static int snd_saa7134_capsrc_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
738 {
739         snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
740         int addr = kcontrol->private_value;
741
742         spin_lock_irq(&chip->mixer_lock);
743         ucontrol->value.integer.value[0] = chip->capture_source[addr][0];
744         ucontrol->value.integer.value[1] = chip->capture_source[addr][1];
745         spin_unlock_irq(&chip->mixer_lock);
746
747         return 0;
748 }
749
750 static int snd_saa7134_capsrc_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
751 {
752         snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
753         int change, addr = kcontrol->private_value;
754         int left, right;
755         u32 anabar, xbarin;
756         int analog_io, rate;
757         struct saa7134_dev *dev;
758
759         dev = chip->dev;
760
761         left = ucontrol->value.integer.value[0] & 1;
762         right = ucontrol->value.integer.value[1] & 1;
763         spin_lock_irq(&chip->mixer_lock);
764
765         change = chip->capture_source[addr][0] != left ||
766                  chip->capture_source[addr][1] != right;
767         chip->capture_source[addr][0] = left;
768         chip->capture_source[addr][1] = right;
769         dev->dmasound.input=addr;
770         spin_unlock_irq(&chip->mixer_lock);
771
772
773         if (change) {
774           switch (dev->pci->device) {
775
776            case PCI_DEVICE_ID_PHILIPS_SAA7134:
777                 switch (addr) {
778                         case MIXER_ADDR_TVTUNER:
779                                 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0xc0);
780                                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, 0x00);
781                                 break;
782                         case MIXER_ADDR_LINE1:
783                         case MIXER_ADDR_LINE2:
784                                 analog_io = (MIXER_ADDR_LINE1 == addr) ? 0x00 : 0x08;
785                                 rate = (32000 == dev->dmasound.rate) ? 0x01 : 0x03;
786                                 saa_andorb(SAA7134_ANALOG_IO_SELECT,  0x08, analog_io);
787                                 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0x80);
788                                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, rate);
789                                 break;
790                 }
791
792                 break;
793            case PCI_DEVICE_ID_PHILIPS_SAA7133:
794            case PCI_DEVICE_ID_PHILIPS_SAA7135:
795                 xbarin = 0x03; // adc
796                 anabar = 0;
797                 switch (addr) {
798                         case MIXER_ADDR_TVTUNER:
799                                 xbarin = 0; // Demodulator
800                                 anabar = 2; // DACs
801                                 break;
802                         case MIXER_ADDR_LINE1:
803                                 anabar = 0;  // aux1, aux1
804                                 break;
805                         case MIXER_ADDR_LINE2:
806                                 anabar = 9;  // aux2, aux2
807                                 break;
808                 }
809
810                 /* output xbar always main channel */
811                 saa_dsp_writel(dev, SAA7133_DIGITAL_OUTPUT_SEL1, 0xbbbb10);
812
813                 if (left || right) { // We've got data, turn the input on
814                   saa_dsp_writel(dev, SAA7133_DIGITAL_INPUT_XBAR1, xbarin);
815                   saa_writel(SAA7133_ANALOG_IO_SELECT, anabar);
816                 } else {
817                   saa_dsp_writel(dev, SAA7133_DIGITAL_INPUT_XBAR1, 0);
818                   saa_writel(SAA7133_ANALOG_IO_SELECT, 0);
819                 }
820                 break;
821           }
822         }
823
824         return change;
825 }
826
827 static snd_kcontrol_new_t snd_saa7134_controls[] = {
828 SAA713x_VOLUME("Video Volume", 0, MIXER_ADDR_TVTUNER),
829 SAA713x_CAPSRC("Video Capture Switch", 0, MIXER_ADDR_TVTUNER),
830 SAA713x_VOLUME("Line Volume", 1, MIXER_ADDR_LINE1),
831 SAA713x_CAPSRC("Line Capture Switch", 1, MIXER_ADDR_LINE1),
832 SAA713x_VOLUME("Line Volume", 2, MIXER_ADDR_LINE2),
833 SAA713x_CAPSRC("Line Capture Switch", 2, MIXER_ADDR_LINE2),
834 };
835
836 /*
837  * ALSA mixer setup
838  *
839  *   Called when initializing the board. Sets up the name and hooks up
840  *  the callbacks
841  *
842  */
843
844 static int snd_card_saa7134_new_mixer(snd_card_saa7134_t * chip)
845 {
846         snd_card_t *card = chip->card;
847         unsigned int idx;
848         int err;
849
850         snd_assert(chip != NULL, return -EINVAL);
851         strcpy(card->mixername, "SAA7134 Mixer");
852
853         for (idx = 0; idx < ARRAY_SIZE(snd_saa7134_controls); idx++) {
854                 if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_saa7134_controls[idx], chip))) < 0)
855                         return err;
856         }
857         return 0;
858 }
859
860 static void snd_saa7134_free(snd_card_t * card)
861 {
862         snd_card_saa7134_t *chip = card->private_data;
863
864         if (chip->dev->dmasound.priv_data == NULL)
865                 return;
866
867         if (chip->irq >= 0) {
868                 synchronize_irq(chip->irq);
869                 free_irq(chip->irq, &chip->dev->dmasound);
870         }
871
872         chip->dev->dmasound.priv_data = NULL;
873
874 }
875
876 /*
877  * ALSA initialization
878  *
879  *   Called by the init routine, once for each saa7134 device present,
880  *  it creates the basic structures and registers the ALSA devices
881  *
882  */
883
884 int alsa_card_saa7134_create(struct saa7134_dev *dev, int devnum)
885 {
886
887         snd_card_t *card;
888         snd_card_saa7134_t *chip;
889         int err;
890
891
892         if (devnum >= SNDRV_CARDS)
893                 return -ENODEV;
894         if (!enable[devnum])
895                 return -ENODEV;
896
897         card = snd_card_new(index[devnum], id[devnum], THIS_MODULE, sizeof(snd_card_saa7134_t));
898
899         if (card == NULL)
900                 return -ENOMEM;
901
902         strcpy(card->driver, "SAA7134");
903
904         /* Card "creation" */
905
906         card->private_free = snd_saa7134_free;
907         chip = (snd_card_saa7134_t *) card->private_data;
908
909         spin_lock_init(&chip->lock);
910         spin_lock_init(&chip->mixer_lock);
911
912         chip->dev = dev;
913
914         chip->card = card;
915
916         chip->pci = dev->pci;
917         chip->iobase = pci_resource_start(dev->pci, 0);
918
919
920         err = request_irq(dev->pci->irq, saa7134_alsa_irq,
921                                 SA_SHIRQ | SA_INTERRUPT, dev->name,
922                                 (void*) &dev->dmasound);
923
924         if (err < 0) {
925                 printk(KERN_ERR "%s: can't get IRQ %d for ALSA\n",
926                         dev->name, dev->pci->irq);
927                 goto __nodev;
928         }
929
930         chip->irq = dev->pci->irq;
931
932         init_MUTEX(&dev->dmasound.lock);
933
934         if ((err = snd_card_saa7134_new_mixer(chip)) < 0)
935                 goto __nodev;
936
937         if ((err = snd_card_saa7134_pcm(chip, 0)) < 0)
938                 goto __nodev;
939
940         snd_card_set_dev(card, &chip->pci->dev);
941
942         /* End of "creation" */
943
944         strcpy(card->shortname, "SAA7134");
945         sprintf(card->longname, "%s at 0x%lx irq %d",
946                 chip->dev->name, chip->iobase, chip->irq);
947
948         if ((err = snd_card_register(card)) == 0) {
949                 snd_saa7134_cards[devnum] = card;
950                 return 0;
951         }
952
953 __nodev:
954         snd_card_free(card);
955         return err;
956 }
957
958 /*
959  * Module initializer
960  *
961  * Loops through present saa7134 cards, and assigns an ALSA device
962  * to each one
963  *
964  */
965
966 static int saa7134_alsa_init(void)
967 {
968         struct saa7134_dev *dev = NULL;
969         struct list_head *list;
970
971         position = 0;
972
973         printk(KERN_INFO "saa7134 ALSA driver for DMA sound loaded\n");
974
975         list_for_each(list,&saa7134_devlist) {
976                 dev = list_entry(list, struct saa7134_dev, devlist);
977                 if (dev->dmasound.priv_data == NULL) {
978                         dev->dmasound.priv_data = dev;
979                         alsa_card_saa7134_create(dev,position);
980                         position++;
981                 } else {
982                         printk(KERN_ERR "saa7134 ALSA: DMA sound is being handled by OSS. ignoring %s\n",dev->name);
983                         return -EBUSY;
984                 }
985         }
986
987         if (dev == NULL)
988                 printk(KERN_INFO "saa7134 ALSA: no saa7134 cards found\n");
989
990         return 0;
991 }
992
993 /*
994  * Module destructor
995  */
996
997 void saa7134_alsa_exit(void)
998 {
999         int idx;
1000
1001         for (idx = 0; idx < SNDRV_CARDS; idx++) {
1002                 snd_card_free(snd_saa7134_cards[idx]);
1003         }
1004
1005         printk(KERN_INFO "saa7134 ALSA driver for DMA sound unloaded\n");
1006
1007         return;
1008 }
1009
1010 module_init(saa7134_alsa_init);
1011 module_exit(saa7134_alsa_exit);
1012 MODULE_LICENSE("GPL");
1013 MODULE_AUTHOR("Ricardo Cerqueira");