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