Merge git://git.infradead.org/mtd-2.6
[linux-2.6] / drivers / media / video / saa7134 / saa7134-alsa.c
1 /*
2  *   SAA713x ALSA support for V4L
3  *
4  *   This program is free software; you can redistribute it and/or modify
5  *   it under the terms of the GNU General Public License as published by
6  *   the Free Software Foundation, version 2
7  *
8  *   This program is distributed in the hope that it will be useful,
9  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
10  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11  *   GNU General Public License for more details.
12  *
13  *   You should have received a copy of the GNU General Public License
14  *   along with this program; if not, write to the Free Software
15  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
16  *
17  */
18
19 #include <linux/init.h>
20 #include <linux/slab.h>
21 #include <linux/time.h>
22 #include <linux/wait.h>
23 #include <linux/module.h>
24 #include <sound/core.h>
25 #include <sound/control.h>
26 #include <sound/pcm.h>
27 #include <sound/pcm_params.h>
28 #include <sound/initval.h>
29 #include <linux/interrupt.h>
30
31 #include "saa7134.h"
32 #include "saa7134-reg.h"
33
34 static unsigned int debug;
35 module_param(debug, int, 0644);
36 MODULE_PARM_DESC(debug,"enable debug messages [alsa]");
37
38 /*
39  * Configuration macros
40  */
41
42 /* defaults */
43 #define MIXER_ADDR_TVTUNER      0
44 #define MIXER_ADDR_LINE1        1
45 #define MIXER_ADDR_LINE2        2
46 #define MIXER_ADDR_LAST         2
47
48
49 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
50 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
51 static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 1};
52
53 module_param_array(index, int, NULL, 0444);
54 module_param_array(enable, int, NULL, 0444);
55 MODULE_PARM_DESC(index, "Index value for SAA7134 capture interface(s).");
56 MODULE_PARM_DESC(enable, "Enable (or not) the SAA7134 capture interface(s).");
57
58 #define dprintk(fmt, arg...)    if (debug) \
59         printk(KERN_DEBUG "%s/alsa: " fmt, dev->name , ##arg)
60
61
62
63 /*
64  * Main chip structure
65  */
66
67 typedef struct snd_card_saa7134 {
68         struct snd_card *card;
69         spinlock_t mixer_lock;
70         int mixer_volume[MIXER_ADDR_LAST+1][2];
71         int capture_source[MIXER_ADDR_LAST+1][2];
72         struct pci_dev *pci;
73         struct saa7134_dev *dev;
74
75         unsigned long iobase;
76         s16 irq;
77         u16 mute_was_on;
78
79         spinlock_t lock;
80 } snd_card_saa7134_t;
81
82
83
84 /*
85  * PCM structure
86  */
87
88 typedef struct snd_card_saa7134_pcm {
89         struct saa7134_dev *dev;
90
91         spinlock_t lock;
92
93         struct snd_pcm_substream *substream;
94 } snd_card_saa7134_pcm_t;
95
96 static struct snd_card *snd_saa7134_cards[SNDRV_CARDS];
97
98
99 /*
100  * saa7134 DMA audio stop
101  *
102  *   Called when the capture device is released or the buffer overflows
103  *
104  *   - Copied verbatim from saa7134-oss's dsp_dma_stop.
105  *
106  */
107
108 static void saa7134_dma_stop(struct saa7134_dev *dev)
109 {
110         dev->dmasound.dma_blk     = -1;
111         dev->dmasound.dma_running = 0;
112         saa7134_set_dmabits(dev);
113 }
114
115 /*
116  * saa7134 DMA audio start
117  *
118  *   Called when preparing the capture device for use
119  *
120  *   - Copied verbatim from saa7134-oss's dsp_dma_start.
121  *
122  */
123
124 static void saa7134_dma_start(struct saa7134_dev *dev)
125 {
126         dev->dmasound.dma_blk     = 0;
127         dev->dmasound.dma_running = 1;
128         saa7134_set_dmabits(dev);
129 }
130
131 /*
132  * saa7134 audio DMA IRQ handler
133  *
134  *   Called whenever we get an SAA7134_IRQ_REPORT_DONE_RA3 interrupt
135  *   Handles shifting between the 2 buffers, manages the read counters,
136  *  and notifies ALSA when periods elapse
137  *
138  *   - Mostly copied from saa7134-oss's saa7134_irq_oss_done.
139  *
140  */
141
142 static void saa7134_irq_alsa_done(struct saa7134_dev *dev,
143                                   unsigned long status)
144 {
145         int next_blk, reg = 0;
146
147         spin_lock(&dev->slock);
148         if (UNSET == dev->dmasound.dma_blk) {
149                 dprintk("irq: recording stopped\n");
150                 goto done;
151         }
152         if (0 != (status & 0x0f000000))
153                 dprintk("irq: lost %ld\n", (status >> 24) & 0x0f);
154         if (0 == (status & 0x10000000)) {
155                 /* odd */
156                 if (0 == (dev->dmasound.dma_blk & 0x01))
157                         reg = SAA7134_RS_BA1(6);
158         } else {
159                 /* even */
160                 if (1 == (dev->dmasound.dma_blk & 0x01))
161                         reg = SAA7134_RS_BA2(6);
162         }
163         if (0 == reg) {
164                 dprintk("irq: field oops [%s]\n",
165                         (status & 0x10000000) ? "even" : "odd");
166                 goto done;
167         }
168
169         if (dev->dmasound.read_count >= dev->dmasound.blksize * (dev->dmasound.blocks-2)) {
170                 dprintk("irq: overrun [full=%d/%d] - Blocks in %d\n",dev->dmasound.read_count,
171                         dev->dmasound.bufsize, dev->dmasound.blocks);
172                 spin_unlock(&dev->slock);
173                 snd_pcm_stop(dev->dmasound.substream,SNDRV_PCM_STATE_XRUN);
174                 return;
175         }
176
177         /* next block addr */
178         next_blk = (dev->dmasound.dma_blk + 2) % dev->dmasound.blocks;
179         saa_writel(reg,next_blk * dev->dmasound.blksize);
180         if (debug > 2)
181                 dprintk("irq: ok, %s, next_blk=%d, addr=%x, blocks=%u, size=%u, read=%u\n",
182                         (status & 0x10000000) ? "even" : "odd ", next_blk,
183                         next_blk * dev->dmasound.blksize, dev->dmasound.blocks, dev->dmasound.blksize, dev->dmasound.read_count);
184
185         /* update status & wake waiting readers */
186         dev->dmasound.dma_blk = (dev->dmasound.dma_blk + 1) % dev->dmasound.blocks;
187         dev->dmasound.read_count += dev->dmasound.blksize;
188
189         dev->dmasound.recording_on = reg;
190
191         if (dev->dmasound.read_count >= snd_pcm_lib_period_bytes(dev->dmasound.substream)) {
192                 spin_unlock(&dev->slock);
193                 snd_pcm_period_elapsed(dev->dmasound.substream);
194                 spin_lock(&dev->slock);
195         }
196
197  done:
198         spin_unlock(&dev->slock);
199
200 }
201
202 /*
203  * IRQ request handler
204  *
205  *   Runs along with saa7134's IRQ handler, discards anything that isn't
206  *   DMA sound
207  *
208  */
209
210 static irqreturn_t saa7134_alsa_irq(int irq, void *dev_id)
211 {
212         struct saa7134_dmasound *dmasound = dev_id;
213         struct saa7134_dev *dev = dmasound->priv_data;
214
215         unsigned long report, status;
216         int loop, handled = 0;
217
218         for (loop = 0; loop < 10; loop++) {
219                 report = saa_readl(SAA7134_IRQ_REPORT);
220                 status = saa_readl(SAA7134_IRQ_STATUS);
221
222                 if (report & SAA7134_IRQ_REPORT_DONE_RA3) {
223                         handled = 1;
224                         saa_writel(SAA7134_IRQ_REPORT,
225                                    SAA7134_IRQ_REPORT_DONE_RA3);
226                         saa7134_irq_alsa_done(dev, status);
227                 } else {
228                         goto out;
229                 }
230         }
231
232         if (loop == 10) {
233                 dprintk("error! looping IRQ!");
234         }
235
236 out:
237         return IRQ_RETVAL(handled);
238 }
239
240 /*
241  * ALSA capture trigger
242  *
243  *   - One of the ALSA capture callbacks.
244  *
245  *   Called whenever a capture is started or stopped. Must be defined,
246  *   but there's nothing we want to do here
247  *
248  */
249
250 static int snd_card_saa7134_capture_trigger(struct snd_pcm_substream * substream,
251                                           int cmd)
252 {
253         struct snd_pcm_runtime *runtime = substream->runtime;
254         snd_card_saa7134_pcm_t *pcm = runtime->private_data;
255         struct saa7134_dev *dev=pcm->dev;
256         int err = 0;
257
258         spin_lock(&dev->slock);
259         if (cmd == SNDRV_PCM_TRIGGER_START) {
260                 /* start dma */
261                 saa7134_dma_start(dev);
262         } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
263                 /* stop dma */
264                 saa7134_dma_stop(dev);
265         } else {
266                 err = -EINVAL;
267         }
268         spin_unlock(&dev->slock);
269
270         return err;
271 }
272
273 /*
274  * DMA buffer initialization
275  *
276  *   Uses V4L functions to initialize the DMA. Shouldn't be necessary in
277  *  ALSA, but I was unable to use ALSA's own DMA, and had to force the
278  *  usage of V4L's
279  *
280  *   - Copied verbatim from saa7134-oss.
281  *
282  */
283
284 static int dsp_buffer_init(struct saa7134_dev *dev)
285 {
286         int err;
287
288         BUG_ON(!dev->dmasound.bufsize);
289
290         videobuf_dma_init(&dev->dmasound.dma);
291         err = videobuf_dma_init_kernel(&dev->dmasound.dma, PCI_DMA_FROMDEVICE,
292                                        (dev->dmasound.bufsize + PAGE_SIZE) >> PAGE_SHIFT);
293         if (0 != err)
294                 return err;
295         return 0;
296 }
297
298 /*
299  * DMA buffer release
300  *
301  *   Called after closing the device, during snd_card_saa7134_capture_close
302  *
303  */
304
305 static int dsp_buffer_free(struct saa7134_dev *dev)
306 {
307         BUG_ON(!dev->dmasound.blksize);
308
309         videobuf_dma_free(&dev->dmasound.dma);
310
311         dev->dmasound.blocks  = 0;
312         dev->dmasound.blksize = 0;
313         dev->dmasound.bufsize = 0;
314
315         return 0;
316 }
317
318
319 /*
320  * ALSA PCM preparation
321  *
322  *   - One of the ALSA capture callbacks.
323  *
324  *   Called right after the capture device is opened, this function configures
325  *  the buffer using the previously defined functions, allocates the memory,
326  *  sets up the hardware registers, and then starts the DMA. When this function
327  *  returns, the audio should be flowing.
328  *
329  */
330
331 static int snd_card_saa7134_capture_prepare(struct snd_pcm_substream * substream)
332 {
333         struct snd_pcm_runtime *runtime = substream->runtime;
334         int bswap, sign;
335         u32 fmt, control;
336         snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
337         struct saa7134_dev *dev;
338         snd_card_saa7134_pcm_t *pcm = runtime->private_data;
339
340         pcm->dev->dmasound.substream = substream;
341
342         dev = saa7134->dev;
343
344         if (snd_pcm_format_width(runtime->format) == 8)
345                 fmt = 0x00;
346         else
347                 fmt = 0x01;
348
349         if (snd_pcm_format_signed(runtime->format))
350                 sign = 1;
351         else
352                 sign = 0;
353
354         if (snd_pcm_format_big_endian(runtime->format))
355                 bswap = 1;
356         else
357                 bswap = 0;
358
359         switch (dev->pci->device) {
360           case PCI_DEVICE_ID_PHILIPS_SAA7134:
361                 if (1 == runtime->channels)
362                         fmt |= (1 << 3);
363                 if (2 == runtime->channels)
364                         fmt |= (3 << 3);
365                 if (sign)
366                         fmt |= 0x04;
367
368                 fmt |= (MIXER_ADDR_TVTUNER == dev->dmasound.input) ? 0xc0 : 0x80;
369                 saa_writeb(SAA7134_NUM_SAMPLES0, ((dev->dmasound.blksize - 1) & 0x0000ff));
370                 saa_writeb(SAA7134_NUM_SAMPLES1, ((dev->dmasound.blksize - 1) & 0x00ff00) >>  8);
371                 saa_writeb(SAA7134_NUM_SAMPLES2, ((dev->dmasound.blksize - 1) & 0xff0000) >> 16);
372                 saa_writeb(SAA7134_AUDIO_FORMAT_CTRL, fmt);
373
374                 break;
375           case PCI_DEVICE_ID_PHILIPS_SAA7133:
376           case PCI_DEVICE_ID_PHILIPS_SAA7135:
377                 if (1 == runtime->channels)
378                         fmt |= (1 << 4);
379                 if (2 == runtime->channels)
380                         fmt |= (2 << 4);
381                 if (!sign)
382                         fmt |= 0x04;
383                 saa_writel(SAA7133_NUM_SAMPLES, dev->dmasound.blksize -1);
384                 saa_writel(SAA7133_AUDIO_CHANNEL, 0x543210 | (fmt << 24));
385                 break;
386         }
387
388         dprintk("rec_start: afmt=%d ch=%d  =>  fmt=0x%x swap=%c\n",
389                 runtime->format, runtime->channels, fmt,
390                 bswap ? 'b' : '-');
391         /* dma: setup channel 6 (= AUDIO) */
392         control = SAA7134_RS_CONTROL_BURST_16 |
393                 SAA7134_RS_CONTROL_ME |
394                 (dev->dmasound.pt.dma >> 12);
395         if (bswap)
396                 control |= SAA7134_RS_CONTROL_BSWAP;
397
398         saa_writel(SAA7134_RS_BA1(6),0);
399         saa_writel(SAA7134_RS_BA2(6),dev->dmasound.blksize);
400         saa_writel(SAA7134_RS_PITCH(6),0);
401         saa_writel(SAA7134_RS_CONTROL(6),control);
402
403         dev->dmasound.rate = runtime->rate;
404
405         return 0;
406
407 }
408
409 /*
410  * ALSA pointer fetching
411  *
412  *   - One of the ALSA capture callbacks.
413  *
414  *   Called whenever a period elapses, it must return the current hardware
415  *  position of the buffer.
416  *   Also resets the read counter used to prevent overruns
417  *
418  */
419
420 static snd_pcm_uframes_t
421 snd_card_saa7134_capture_pointer(struct snd_pcm_substream * substream)
422 {
423         struct snd_pcm_runtime *runtime = substream->runtime;
424         snd_card_saa7134_pcm_t *pcm = runtime->private_data;
425         struct saa7134_dev *dev=pcm->dev;
426
427         if (dev->dmasound.read_count) {
428                 dev->dmasound.read_count  -= snd_pcm_lib_period_bytes(substream);
429                 dev->dmasound.read_offset += snd_pcm_lib_period_bytes(substream);
430                 if (dev->dmasound.read_offset == dev->dmasound.bufsize)
431                         dev->dmasound.read_offset = 0;
432         }
433
434         return bytes_to_frames(runtime, dev->dmasound.read_offset);
435 }
436
437 /*
438  * ALSA hardware capabilities definition
439  */
440
441 static struct snd_pcm_hardware snd_card_saa7134_capture =
442 {
443         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
444                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
445                                  SNDRV_PCM_INFO_MMAP_VALID),
446         .formats =              SNDRV_PCM_FMTBIT_S16_LE | \
447                                 SNDRV_PCM_FMTBIT_S16_BE | \
448                                 SNDRV_PCM_FMTBIT_S8 | \
449                                 SNDRV_PCM_FMTBIT_U8 | \
450                                 SNDRV_PCM_FMTBIT_U16_LE | \
451                                 SNDRV_PCM_FMTBIT_U16_BE,
452         .rates =                SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_48000,
453         .rate_min =             32000,
454         .rate_max =             48000,
455         .channels_min =         1,
456         .channels_max =         2,
457         .buffer_bytes_max =     (256*1024),
458         .period_bytes_min =     64,
459         .period_bytes_max =     (256*1024),
460         .periods_min =          4,
461         .periods_max =          1024,
462 };
463
464 static void snd_card_saa7134_runtime_free(struct snd_pcm_runtime *runtime)
465 {
466         snd_card_saa7134_pcm_t *pcm = runtime->private_data;
467
468         kfree(pcm);
469 }
470
471
472 /*
473  * ALSA hardware params
474  *
475  *   - One of the ALSA capture callbacks.
476  *
477  *   Called on initialization, right before the PCM preparation
478  *
479  */
480
481 static int snd_card_saa7134_hw_params(struct snd_pcm_substream * substream,
482                                       struct snd_pcm_hw_params * hw_params)
483 {
484         snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
485         struct saa7134_dev *dev;
486         unsigned int period_size, periods;
487         int err;
488
489         period_size = params_period_bytes(hw_params);
490         periods = params_periods(hw_params);
491
492         snd_assert(period_size >= 0x100 && period_size <= 0x10000,
493                    return -EINVAL);
494         snd_assert(periods >= 4, return -EINVAL);
495         snd_assert(period_size * periods <= 1024 * 1024, return -EINVAL);
496
497         dev = saa7134->dev;
498
499         if (dev->dmasound.blocks == periods &&
500             dev->dmasound.blksize == period_size)
501                 return 0;
502
503         /* release the old buffer */
504         if (substream->runtime->dma_area) {
505                 saa7134_pgtable_free(dev->pci, &dev->dmasound.pt);
506                 videobuf_sg_dma_unmap(&dev->pci->dev, &dev->dmasound.dma);
507                 dsp_buffer_free(dev);
508                 substream->runtime->dma_area = NULL;
509         }
510         dev->dmasound.blocks  = periods;
511         dev->dmasound.blksize = period_size;
512         dev->dmasound.bufsize = period_size * periods;
513
514         err = dsp_buffer_init(dev);
515         if (0 != err) {
516                 dev->dmasound.blocks  = 0;
517                 dev->dmasound.blksize = 0;
518                 dev->dmasound.bufsize = 0;
519                 return err;
520         }
521
522         if (0 != (err = videobuf_sg_dma_map(&dev->pci->dev, &dev->dmasound.dma))) {
523                 dsp_buffer_free(dev);
524                 return err;
525         }
526         if (0 != (err = saa7134_pgtable_alloc(dev->pci,&dev->dmasound.pt))) {
527                 videobuf_sg_dma_unmap(&dev->pci->dev, &dev->dmasound.dma);
528                 dsp_buffer_free(dev);
529                 return err;
530         }
531         if (0 != (err = saa7134_pgtable_build(dev->pci,&dev->dmasound.pt,
532                                                 dev->dmasound.dma.sglist,
533                                                 dev->dmasound.dma.sglen,
534                                                 0))) {
535                 saa7134_pgtable_free(dev->pci, &dev->dmasound.pt);
536                 videobuf_sg_dma_unmap(&dev->pci->dev, &dev->dmasound.dma);
537                 dsp_buffer_free(dev);
538                 return err;
539         }
540
541         /* I should be able to use runtime->dma_addr in the control
542            byte, but it doesn't work. So I allocate the DMA using the
543            V4L functions, and force ALSA to use that as the DMA area */
544
545         substream->runtime->dma_area = dev->dmasound.dma.vmalloc;
546         substream->runtime->dma_bytes = dev->dmasound.bufsize;
547         substream->runtime->dma_addr = 0;
548
549         return 0;
550
551 }
552
553 /*
554  * ALSA hardware release
555  *
556  *   - One of the ALSA capture callbacks.
557  *
558  *   Called after closing the device, but before snd_card_saa7134_capture_close
559  *   It stops the DMA audio and releases the buffers.
560  *
561  */
562
563 static int snd_card_saa7134_hw_free(struct snd_pcm_substream * substream)
564 {
565         snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
566         struct saa7134_dev *dev;
567
568         dev = saa7134->dev;
569
570         if (substream->runtime->dma_area) {
571                 saa7134_pgtable_free(dev->pci, &dev->dmasound.pt);
572                 videobuf_sg_dma_unmap(&dev->pci->dev, &dev->dmasound.dma);
573                 dsp_buffer_free(dev);
574                 substream->runtime->dma_area = NULL;
575         }
576
577         return 0;
578 }
579
580 /*
581  * ALSA capture finish
582  *
583  *   - One of the ALSA capture callbacks.
584  *
585  *   Called after closing the device.
586  *
587  */
588
589 static int snd_card_saa7134_capture_close(struct snd_pcm_substream * substream)
590 {
591         snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
592         struct saa7134_dev *dev = saa7134->dev;
593
594         if (saa7134->mute_was_on) {
595                 dev->ctl_mute = 1;
596                 saa7134_tvaudio_setmute(dev);
597         }
598         return 0;
599 }
600
601 /*
602  * ALSA capture start
603  *
604  *   - One of the ALSA capture callbacks.
605  *
606  *   Called when opening the device. It creates and populates the PCM
607  *  structure
608  *
609  */
610
611 static int snd_card_saa7134_capture_open(struct snd_pcm_substream * substream)
612 {
613         struct snd_pcm_runtime *runtime = substream->runtime;
614         snd_card_saa7134_pcm_t *pcm;
615         snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
616         struct saa7134_dev *dev = saa7134->dev;
617         int amux, err;
618
619         mutex_lock(&dev->dmasound.lock);
620
621         dev->dmasound.read_count  = 0;
622         dev->dmasound.read_offset = 0;
623
624         amux = dev->input->amux;
625         if ((amux < 1) || (amux > 3))
626                 amux = 1;
627         dev->dmasound.input  =  amux - 1;
628
629         mutex_unlock(&dev->dmasound.lock);
630
631         pcm = kzalloc(sizeof(*pcm), GFP_KERNEL);
632         if (pcm == NULL)
633                 return -ENOMEM;
634
635         pcm->dev=saa7134->dev;
636
637         spin_lock_init(&pcm->lock);
638
639         pcm->substream = substream;
640         runtime->private_data = pcm;
641         runtime->private_free = snd_card_saa7134_runtime_free;
642         runtime->hw = snd_card_saa7134_capture;
643
644         if (dev->ctl_mute != 0) {
645                 saa7134->mute_was_on = 1;
646                 dev->ctl_mute = 0;
647                 saa7134_tvaudio_setmute(dev);
648         }
649
650         err = snd_pcm_hw_constraint_integer(runtime,
651                                                 SNDRV_PCM_HW_PARAM_PERIODS);
652         if (err < 0)
653                 return err;
654
655         err = snd_pcm_hw_constraint_step(runtime, 0,
656                                                 SNDRV_PCM_HW_PARAM_PERIODS, 2);
657         if (err < 0)
658                 return err;
659
660         return 0;
661 }
662
663 /*
664  * page callback (needed for mmap)
665  */
666
667 static struct page *snd_card_saa7134_page(struct snd_pcm_substream *substream,
668                                         unsigned long offset)
669 {
670         void *pageptr = substream->runtime->dma_area + offset;
671         return vmalloc_to_page(pageptr);
672 }
673
674 /*
675  * ALSA capture callbacks definition
676  */
677
678 static struct snd_pcm_ops snd_card_saa7134_capture_ops = {
679         .open =                 snd_card_saa7134_capture_open,
680         .close =                snd_card_saa7134_capture_close,
681         .ioctl =                snd_pcm_lib_ioctl,
682         .hw_params =            snd_card_saa7134_hw_params,
683         .hw_free =              snd_card_saa7134_hw_free,
684         .prepare =              snd_card_saa7134_capture_prepare,
685         .trigger =              snd_card_saa7134_capture_trigger,
686         .pointer =              snd_card_saa7134_capture_pointer,
687         .page =                 snd_card_saa7134_page,
688 };
689
690 /*
691  * ALSA PCM setup
692  *
693  *   Called when initializing the board. Sets up the name and hooks up
694  *  the callbacks
695  *
696  */
697
698 static int snd_card_saa7134_pcm(snd_card_saa7134_t *saa7134, int device)
699 {
700         struct snd_pcm *pcm;
701         int err;
702
703         if ((err = snd_pcm_new(saa7134->card, "SAA7134 PCM", device, 0, 1, &pcm)) < 0)
704                 return err;
705         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_card_saa7134_capture_ops);
706         pcm->private_data = saa7134;
707         pcm->info_flags = 0;
708         strcpy(pcm->name, "SAA7134 PCM");
709         return 0;
710 }
711
712 #define SAA713x_VOLUME(xname, xindex, addr) \
713 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
714   .info = snd_saa7134_volume_info, \
715   .get = snd_saa7134_volume_get, .put = snd_saa7134_volume_put, \
716   .private_value = addr }
717
718 static int snd_saa7134_volume_info(struct snd_kcontrol * kcontrol,
719                                    struct snd_ctl_elem_info * uinfo)
720 {
721         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
722         uinfo->count = 2;
723         uinfo->value.integer.min = 0;
724         uinfo->value.integer.max = 20;
725         return 0;
726 }
727
728 static int snd_saa7134_volume_get(struct snd_kcontrol * kcontrol,
729                                   struct snd_ctl_elem_value * ucontrol)
730 {
731         snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
732         int addr = kcontrol->private_value;
733
734         ucontrol->value.integer.value[0] = chip->mixer_volume[addr][0];
735         ucontrol->value.integer.value[1] = chip->mixer_volume[addr][1];
736         return 0;
737 }
738
739 static int snd_saa7134_volume_put(struct snd_kcontrol * kcontrol,
740                                   struct snd_ctl_elem_value * ucontrol)
741 {
742         snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
743         struct saa7134_dev *dev = chip->dev;
744
745         int change, addr = kcontrol->private_value;
746         int left, right;
747
748         left = ucontrol->value.integer.value[0];
749         if (left < 0)
750                 left = 0;
751         if (left > 20)
752                 left = 20;
753         right = ucontrol->value.integer.value[1];
754         if (right < 0)
755                 right = 0;
756         if (right > 20)
757                 right = 20;
758         spin_lock_irq(&chip->mixer_lock);
759         change = 0;
760         if (chip->mixer_volume[addr][0] != left) {
761                 change = 1;
762                 right = left;
763         }
764         if (chip->mixer_volume[addr][1] != right) {
765                 change = 1;
766                 left = right;
767         }
768         if (change) {
769                 switch (dev->pci->device) {
770                         case PCI_DEVICE_ID_PHILIPS_SAA7134:
771                                 switch (addr) {
772                                         case MIXER_ADDR_TVTUNER:
773                                                 left = 20;
774                                                 break;
775                                         case MIXER_ADDR_LINE1:
776                                                 saa_andorb(SAA7134_ANALOG_IO_SELECT,  0x10,
777                                                            (left > 10) ? 0x00 : 0x10);
778                                                 break;
779                                         case MIXER_ADDR_LINE2:
780                                                 saa_andorb(SAA7134_ANALOG_IO_SELECT,  0x20,
781                                                            (left > 10) ? 0x00 : 0x20);
782                                                 break;
783                                 }
784                                 break;
785                         case PCI_DEVICE_ID_PHILIPS_SAA7133:
786                         case PCI_DEVICE_ID_PHILIPS_SAA7135:
787                                 switch (addr) {
788                                         case MIXER_ADDR_TVTUNER:
789                                                 left = 20;
790                                                 break;
791                                         case MIXER_ADDR_LINE1:
792                                                 saa_andorb(0x0594,  0x10,
793                                                            (left > 10) ? 0x00 : 0x10);
794                                                 break;
795                                         case MIXER_ADDR_LINE2:
796                                                 saa_andorb(0x0594,  0x20,
797                                                            (left > 10) ? 0x00 : 0x20);
798                                                 break;
799                                 }
800                                 break;
801                 }
802                 chip->mixer_volume[addr][0] = left;
803                 chip->mixer_volume[addr][1] = right;
804         }
805         spin_unlock_irq(&chip->mixer_lock);
806         return change;
807 }
808
809 #define SAA713x_CAPSRC(xname, xindex, addr) \
810 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
811   .info = snd_saa7134_capsrc_info, \
812   .get = snd_saa7134_capsrc_get, .put = snd_saa7134_capsrc_put, \
813   .private_value = addr }
814
815 static int snd_saa7134_capsrc_info(struct snd_kcontrol * kcontrol,
816                                    struct snd_ctl_elem_info * uinfo)
817 {
818         uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
819         uinfo->count = 2;
820         uinfo->value.integer.min = 0;
821         uinfo->value.integer.max = 1;
822         return 0;
823 }
824
825 static int snd_saa7134_capsrc_get(struct snd_kcontrol * kcontrol,
826                                   struct snd_ctl_elem_value * ucontrol)
827 {
828         snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
829         int addr = kcontrol->private_value;
830
831         spin_lock_irq(&chip->mixer_lock);
832         ucontrol->value.integer.value[0] = chip->capture_source[addr][0];
833         ucontrol->value.integer.value[1] = chip->capture_source[addr][1];
834         spin_unlock_irq(&chip->mixer_lock);
835
836         return 0;
837 }
838
839 static int snd_saa7134_capsrc_put(struct snd_kcontrol * kcontrol,
840                                   struct snd_ctl_elem_value * ucontrol)
841 {
842         snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
843         int change, addr = kcontrol->private_value;
844         int left, right;
845         u32 anabar, xbarin;
846         int analog_io, rate;
847         struct saa7134_dev *dev;
848
849         dev = chip->dev;
850
851         left = ucontrol->value.integer.value[0] & 1;
852         right = ucontrol->value.integer.value[1] & 1;
853         spin_lock_irq(&chip->mixer_lock);
854
855         change = chip->capture_source[addr][0] != left ||
856                  chip->capture_source[addr][1] != right;
857         chip->capture_source[addr][0] = left;
858         chip->capture_source[addr][1] = right;
859         dev->dmasound.input=addr;
860         spin_unlock_irq(&chip->mixer_lock);
861
862
863         if (change) {
864           switch (dev->pci->device) {
865
866            case PCI_DEVICE_ID_PHILIPS_SAA7134:
867                 switch (addr) {
868                         case MIXER_ADDR_TVTUNER:
869                                 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0xc0);
870                                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, 0x00);
871                                 break;
872                         case MIXER_ADDR_LINE1:
873                         case MIXER_ADDR_LINE2:
874                                 analog_io = (MIXER_ADDR_LINE1 == addr) ? 0x00 : 0x08;
875                                 rate = (32000 == dev->dmasound.rate) ? 0x01 : 0x03;
876                                 saa_andorb(SAA7134_ANALOG_IO_SELECT,  0x08, analog_io);
877                                 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0x80);
878                                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, rate);
879                                 break;
880                 }
881
882                 break;
883            case PCI_DEVICE_ID_PHILIPS_SAA7133:
884            case PCI_DEVICE_ID_PHILIPS_SAA7135:
885                 xbarin = 0x03; // adc
886                 anabar = 0;
887                 switch (addr) {
888                         case MIXER_ADDR_TVTUNER:
889                                 xbarin = 0; // Demodulator
890                                 anabar = 2; // DACs
891                                 break;
892                         case MIXER_ADDR_LINE1:
893                                 anabar = 0;  // aux1, aux1
894                                 break;
895                         case MIXER_ADDR_LINE2:
896                                 anabar = 9;  // aux2, aux2
897                                 break;
898                 }
899
900                 /* output xbar always main channel */
901                 saa_dsp_writel(dev, SAA7133_DIGITAL_OUTPUT_SEL1, 0xbbbb10);
902
903                 if (left || right) { // We've got data, turn the input on
904                   saa_dsp_writel(dev, SAA7133_DIGITAL_INPUT_XBAR1, xbarin);
905                   saa_writel(SAA7133_ANALOG_IO_SELECT, anabar);
906                 } else {
907                   saa_dsp_writel(dev, SAA7133_DIGITAL_INPUT_XBAR1, 0);
908                   saa_writel(SAA7133_ANALOG_IO_SELECT, 0);
909                 }
910                 break;
911           }
912         }
913
914         return change;
915 }
916
917 static struct snd_kcontrol_new snd_saa7134_controls[] = {
918 SAA713x_VOLUME("Video Volume", 0, MIXER_ADDR_TVTUNER),
919 SAA713x_CAPSRC("Video Capture Switch", 0, MIXER_ADDR_TVTUNER),
920 SAA713x_VOLUME("Line Volume", 1, MIXER_ADDR_LINE1),
921 SAA713x_CAPSRC("Line Capture Switch", 1, MIXER_ADDR_LINE1),
922 SAA713x_VOLUME("Line Volume", 2, MIXER_ADDR_LINE2),
923 SAA713x_CAPSRC("Line Capture Switch", 2, MIXER_ADDR_LINE2),
924 };
925
926 /*
927  * ALSA mixer setup
928  *
929  *   Called when initializing the board. Sets up the name and hooks up
930  *  the callbacks
931  *
932  */
933
934 static int snd_card_saa7134_new_mixer(snd_card_saa7134_t * chip)
935 {
936         struct snd_card *card = chip->card;
937         unsigned int idx;
938         int err;
939
940         snd_assert(chip != NULL, return -EINVAL);
941         strcpy(card->mixername, "SAA7134 Mixer");
942
943         for (idx = 0; idx < ARRAY_SIZE(snd_saa7134_controls); idx++) {
944                 if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_saa7134_controls[idx], chip))) < 0)
945                         return err;
946         }
947         return 0;
948 }
949
950 static void snd_saa7134_free(struct snd_card * card)
951 {
952         snd_card_saa7134_t *chip = card->private_data;
953
954         if (chip->dev->dmasound.priv_data == NULL)
955                 return;
956
957         if (chip->irq >= 0)
958                 free_irq(chip->irq, &chip->dev->dmasound);
959
960         chip->dev->dmasound.priv_data = NULL;
961
962 }
963
964 /*
965  * ALSA initialization
966  *
967  *   Called by the init routine, once for each saa7134 device present,
968  *  it creates the basic structures and registers the ALSA devices
969  *
970  */
971
972 static int alsa_card_saa7134_create(struct saa7134_dev *dev, int devnum)
973 {
974
975         struct snd_card *card;
976         snd_card_saa7134_t *chip;
977         int err;
978
979
980         if (devnum >= SNDRV_CARDS)
981                 return -ENODEV;
982         if (!enable[devnum])
983                 return -ENODEV;
984
985         card = snd_card_new(index[devnum], id[devnum], THIS_MODULE, sizeof(snd_card_saa7134_t));
986
987         if (card == NULL)
988                 return -ENOMEM;
989
990         strcpy(card->driver, "SAA7134");
991
992         /* Card "creation" */
993
994         card->private_free = snd_saa7134_free;
995         chip = (snd_card_saa7134_t *) card->private_data;
996
997         spin_lock_init(&chip->lock);
998         spin_lock_init(&chip->mixer_lock);
999
1000         chip->dev = dev;
1001
1002         chip->card = card;
1003
1004         chip->pci = dev->pci;
1005         chip->iobase = pci_resource_start(dev->pci, 0);
1006
1007
1008         err = request_irq(dev->pci->irq, saa7134_alsa_irq,
1009                                 IRQF_SHARED | IRQF_DISABLED, dev->name,
1010                                 (void*) &dev->dmasound);
1011
1012         if (err < 0) {
1013                 printk(KERN_ERR "%s: can't get IRQ %d for ALSA\n",
1014                         dev->name, dev->pci->irq);
1015                 goto __nodev;
1016         }
1017
1018         chip->irq = dev->pci->irq;
1019
1020         mutex_init(&dev->dmasound.lock);
1021
1022         if ((err = snd_card_saa7134_new_mixer(chip)) < 0)
1023                 goto __nodev;
1024
1025         if ((err = snd_card_saa7134_pcm(chip, 0)) < 0)
1026                 goto __nodev;
1027
1028         snd_card_set_dev(card, &chip->pci->dev);
1029
1030         /* End of "creation" */
1031
1032         strcpy(card->shortname, "SAA7134");
1033         sprintf(card->longname, "%s at 0x%lx irq %d",
1034                 chip->dev->name, chip->iobase, chip->irq);
1035
1036         printk(KERN_INFO "%s/alsa: %s registered as card %d\n",dev->name,card->longname,index[devnum]);
1037
1038         if ((err = snd_card_register(card)) == 0) {
1039                 snd_saa7134_cards[devnum] = card;
1040                 return 0;
1041         }
1042
1043 __nodev:
1044         snd_card_free(card);
1045         return err;
1046 }
1047
1048
1049 static int alsa_device_init(struct saa7134_dev *dev)
1050 {
1051         dev->dmasound.priv_data = dev;
1052         alsa_card_saa7134_create(dev,dev->nr);
1053         return 1;
1054 }
1055
1056 static int alsa_device_exit(struct saa7134_dev *dev)
1057 {
1058
1059         snd_card_free(snd_saa7134_cards[dev->nr]);
1060         snd_saa7134_cards[dev->nr] = NULL;
1061         return 1;
1062 }
1063
1064 /*
1065  * Module initializer
1066  *
1067  * Loops through present saa7134 cards, and assigns an ALSA device
1068  * to each one
1069  *
1070  */
1071
1072 static int saa7134_alsa_init(void)
1073 {
1074         struct saa7134_dev *dev = NULL;
1075         struct list_head *list;
1076
1077         saa7134_dmasound_init = alsa_device_init;
1078         saa7134_dmasound_exit = alsa_device_exit;
1079
1080         printk(KERN_INFO "saa7134 ALSA driver for DMA sound loaded\n");
1081
1082         list_for_each(list,&saa7134_devlist) {
1083                 dev = list_entry(list, struct saa7134_dev, devlist);
1084                 alsa_device_init(dev);
1085         }
1086
1087         if (dev == NULL)
1088                 printk(KERN_INFO "saa7134 ALSA: no saa7134 cards found\n");
1089
1090         return 0;
1091
1092 }
1093
1094 /*
1095  * Module destructor
1096  */
1097
1098 static void saa7134_alsa_exit(void)
1099 {
1100         int idx;
1101
1102         for (idx = 0; idx < SNDRV_CARDS; idx++) {
1103                 snd_card_free(snd_saa7134_cards[idx]);
1104         }
1105
1106         saa7134_dmasound_init = NULL;
1107         saa7134_dmasound_exit = NULL;
1108         printk(KERN_INFO "saa7134 ALSA driver for DMA sound unloaded\n");
1109
1110         return;
1111 }
1112
1113 /* We initialize this late, to make sure the sound system is up and running */
1114 late_initcall(saa7134_alsa_init);
1115 module_exit(saa7134_alsa_exit);
1116 MODULE_LICENSE("GPL");
1117 MODULE_AUTHOR("Ricardo Cerqueira");
1118
1119
1120