2 * SAA713x ALSA support for V4L
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
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.
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
19 #include <linux/init.h>
20 #include <linux/slab.h>
21 #include <linux/time.h>
22 #include <linux/wait.h>
23 #include <linux/module.h>
24 #include <sound/driver.h>
25 #include <sound/core.h>
26 #include <sound/control.h>
27 #include <sound/pcm.h>
28 #include <sound/pcm_params.h>
29 #include <sound/initval.h>
30 #include <linux/interrupt.h>
33 #include "saa7134-reg.h"
35 static unsigned int debug
= 0;
36 module_param(debug
, int, 0644);
37 MODULE_PARM_DESC(debug
,"enable debug messages [alsa]");
40 * Configuration macros
44 #define MIXER_ADDR_TVTUNER 0
45 #define MIXER_ADDR_LINE1 1
46 #define MIXER_ADDR_LINE2 2
47 #define MIXER_ADDR_LAST 2
50 static int index
[SNDRV_CARDS
] = SNDRV_DEFAULT_IDX
; /* Index 0-MAX */
51 static char *id
[SNDRV_CARDS
] = SNDRV_DEFAULT_STR
; /* ID for this card */
52 static int enable
[SNDRV_CARDS
] = {1, [1 ... (SNDRV_CARDS
- 1)] = 1};
54 module_param_array(index
, int, NULL
, 0444);
55 module_param_array(enable
, int, NULL
, 0444);
56 MODULE_PARM_DESC(index
, "Index value for SAA7134 capture interface(s).");
57 MODULE_PARM_DESC(enable
, "Enable (or not) the SAA7134 capture interface(s).");
59 #define dprintk(fmt, arg...) if (debug) \
60 printk(KERN_DEBUG "%s/alsa: " fmt, dev->name , ##arg)
68 typedef struct snd_card_saa7134
{
69 struct snd_card
*card
;
70 spinlock_t mixer_lock
;
71 int mixer_volume
[MIXER_ADDR_LAST
+1][2];
72 int capture_source
[MIXER_ADDR_LAST
+1][2];
74 struct saa7134_dev
*dev
;
89 typedef struct snd_card_saa7134_pcm
{
90 struct saa7134_dev
*dev
;
94 struct snd_pcm_substream
*substream
;
95 } snd_card_saa7134_pcm_t
;
97 static struct snd_card
*snd_saa7134_cards
[SNDRV_CARDS
];
101 * saa7134 DMA audio stop
103 * Called when the capture device is released or the buffer overflows
105 * - Copied verbatim from saa7134-oss's dsp_dma_stop.
109 static void saa7134_dma_stop(struct saa7134_dev
*dev
)
111 dev
->dmasound
.dma_blk
= -1;
112 dev
->dmasound
.dma_running
= 0;
113 saa7134_set_dmabits(dev
);
117 * saa7134 DMA audio start
119 * Called when preparing the capture device for use
121 * - Copied verbatim from saa7134-oss's dsp_dma_start.
125 static void saa7134_dma_start(struct saa7134_dev
*dev
)
127 dev
->dmasound
.dma_blk
= 0;
128 dev
->dmasound
.dma_running
= 1;
129 saa7134_set_dmabits(dev
);
133 * saa7134 audio DMA IRQ handler
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
139 * - Mostly copied from saa7134-oss's saa7134_irq_oss_done.
143 static void saa7134_irq_alsa_done(struct saa7134_dev
*dev
,
144 unsigned long status
)
146 int next_blk
, reg
= 0;
148 spin_lock(&dev
->slock
);
149 if (UNSET
== dev
->dmasound
.dma_blk
) {
150 dprintk("irq: recording stopped\n");
153 if (0 != (status
& 0x0f000000))
154 dprintk("irq: lost %ld\n", (status
>> 24) & 0x0f);
155 if (0 == (status
& 0x10000000)) {
157 if (0 == (dev
->dmasound
.dma_blk
& 0x01))
158 reg
= SAA7134_RS_BA1(6);
161 if (1 == (dev
->dmasound
.dma_blk
& 0x01))
162 reg
= SAA7134_RS_BA2(6);
165 dprintk("irq: field oops [%s]\n",
166 (status
& 0x10000000) ? "even" : "odd");
170 if (dev
->dmasound
.read_count
>= dev
->dmasound
.blksize
* (dev
->dmasound
.blocks
-2)) {
171 dprintk("irq: overrun [full=%d/%d] - Blocks in %d\n",dev
->dmasound
.read_count
,
172 dev
->dmasound
.bufsize
, dev
->dmasound
.blocks
);
173 spin_unlock(&dev
->slock
);
174 snd_pcm_stop(dev
->dmasound
.substream
,SNDRV_PCM_STATE_XRUN
);
178 /* next block addr */
179 next_blk
= (dev
->dmasound
.dma_blk
+ 2) % dev
->dmasound
.blocks
;
180 saa_writel(reg
,next_blk
* dev
->dmasound
.blksize
);
182 dprintk("irq: ok, %s, next_blk=%d, addr=%x, blocks=%u, size=%u, read=%u\n",
183 (status
& 0x10000000) ? "even" : "odd ", next_blk
,
184 next_blk
* dev
->dmasound
.blksize
, dev
->dmasound
.blocks
, dev
->dmasound
.blksize
, dev
->dmasound
.read_count
);
186 /* update status & wake waiting readers */
187 dev
->dmasound
.dma_blk
= (dev
->dmasound
.dma_blk
+ 1) % dev
->dmasound
.blocks
;
188 dev
->dmasound
.read_count
+= dev
->dmasound
.blksize
;
190 dev
->dmasound
.recording_on
= reg
;
192 if (dev
->dmasound
.read_count
>= snd_pcm_lib_period_bytes(dev
->dmasound
.substream
)) {
193 spin_unlock(&dev
->slock
);
194 snd_pcm_period_elapsed(dev
->dmasound
.substream
);
195 spin_lock(&dev
->slock
);
199 spin_unlock(&dev
->slock
);
204 * IRQ request handler
206 * Runs along with saa7134's IRQ handler, discards anything that isn't
211 static irqreturn_t
saa7134_alsa_irq(int irq
, void *dev_id
)
213 struct saa7134_dmasound
*dmasound
= dev_id
;
214 struct saa7134_dev
*dev
= dmasound
->priv_data
;
216 unsigned long report
, status
;
217 int loop
, handled
= 0;
219 for (loop
= 0; loop
< 10; loop
++) {
220 report
= saa_readl(SAA7134_IRQ_REPORT
);
221 status
= saa_readl(SAA7134_IRQ_STATUS
);
223 if (report
& SAA7134_IRQ_REPORT_DONE_RA3
) {
225 saa_writel(SAA7134_IRQ_REPORT
,report
);
226 saa7134_irq_alsa_done(dev
, status
);
233 dprintk("error! looping IRQ!");
237 return IRQ_RETVAL(handled
);
241 * ALSA capture trigger
243 * - One of the ALSA capture callbacks.
245 * Called whenever a capture is started or stopped. Must be defined,
246 * but there's nothing we want to do here
250 static int snd_card_saa7134_capture_trigger(struct snd_pcm_substream
* substream
,
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
;
258 spin_lock(&dev
->slock
);
259 if (cmd
== SNDRV_PCM_TRIGGER_START
) {
261 saa7134_dma_start(dev
);
262 } else if (cmd
== SNDRV_PCM_TRIGGER_STOP
) {
264 saa7134_dma_stop(dev
);
268 spin_unlock(&dev
->slock
);
274 * DMA buffer initialization
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
280 * - Copied verbatim from saa7134-oss.
284 static int dsp_buffer_init(struct saa7134_dev
*dev
)
288 BUG_ON(!dev
->dmasound
.bufsize
);
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
);
301 * Called after closing the device, during snd_card_saa7134_capture_close
305 static int dsp_buffer_free(struct saa7134_dev
*dev
)
307 BUG_ON(!dev
->dmasound
.blksize
);
309 videobuf_dma_free(&dev
->dmasound
.dma
);
311 dev
->dmasound
.blocks
= 0;
312 dev
->dmasound
.blksize
= 0;
313 dev
->dmasound
.bufsize
= 0;
320 * ALSA PCM preparation
322 * - One of the ALSA capture callbacks.
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.
331 static int snd_card_saa7134_capture_prepare(struct snd_pcm_substream
* substream
)
333 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
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
;
340 pcm
->dev
->dmasound
.substream
= substream
;
344 if (snd_pcm_format_width(runtime
->format
) == 8)
349 if (snd_pcm_format_signed(runtime
->format
))
354 if (snd_pcm_format_big_endian(runtime
->format
))
359 switch (dev
->pci
->device
) {
360 case PCI_DEVICE_ID_PHILIPS_SAA7134
:
361 if (1 == runtime
->channels
)
363 if (2 == runtime
->channels
)
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
);
375 case PCI_DEVICE_ID_PHILIPS_SAA7133
:
376 case PCI_DEVICE_ID_PHILIPS_SAA7135
:
377 if (1 == runtime
->channels
)
379 if (2 == runtime
->channels
)
383 saa_writel(SAA7133_NUM_SAMPLES
, dev
->dmasound
.blksize
-1);
384 saa_writel(SAA7133_AUDIO_CHANNEL
, 0x543210 | (fmt
<< 24));
388 dprintk("rec_start: afmt=%d ch=%d => fmt=0x%x swap=%c\n",
389 runtime
->format
, runtime
->channels
, fmt
,
391 /* dma: setup channel 6 (= AUDIO) */
392 control
= SAA7134_RS_CONTROL_BURST_16
|
393 SAA7134_RS_CONTROL_ME
|
394 (dev
->dmasound
.pt
.dma
>> 12);
396 control
|= SAA7134_RS_CONTROL_BSWAP
;
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
);
403 dev
->dmasound
.rate
= runtime
->rate
;
410 * ALSA pointer fetching
412 * - One of the ALSA capture callbacks.
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
420 static snd_pcm_uframes_t
421 snd_card_saa7134_capture_pointer(struct snd_pcm_substream
* substream
)
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
;
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;
434 return bytes_to_frames(runtime
, dev
->dmasound
.read_offset
);
438 * ALSA hardware capabilities definition
441 static struct snd_pcm_hardware snd_card_saa7134_capture
=
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
,
457 .buffer_bytes_max
= (256*1024),
458 .period_bytes_min
= 64,
459 .period_bytes_max
= (256*1024),
464 static void snd_card_saa7134_runtime_free(struct snd_pcm_runtime
*runtime
)
466 snd_card_saa7134_pcm_t
*pcm
= runtime
->private_data
;
473 * ALSA hardware params
475 * - One of the ALSA capture callbacks.
477 * Called on initialization, right before the PCM preparation
481 static int snd_card_saa7134_hw_params(struct snd_pcm_substream
* substream
,
482 struct snd_pcm_hw_params
* hw_params
)
484 snd_card_saa7134_t
*saa7134
= snd_pcm_substream_chip(substream
);
485 struct saa7134_dev
*dev
;
486 unsigned int period_size
, periods
;
489 period_size
= params_period_bytes(hw_params
);
490 periods
= params_periods(hw_params
);
492 snd_assert(period_size
>= 0x100 && period_size
<= 0x10000,
494 snd_assert(periods
>= 2, return -EINVAL
);
495 snd_assert(period_size
* periods
<= 1024 * 1024, return -EINVAL
);
499 if (dev
->dmasound
.blocks
== periods
&&
500 dev
->dmasound
.blksize
== period_size
)
503 /* release the old buffer */
504 if (substream
->runtime
->dma_area
) {
505 saa7134_pgtable_free(dev
->pci
, &dev
->dmasound
.pt
);
506 videobuf_pci_dma_unmap(dev
->pci
, &dev
->dmasound
.dma
);
507 dsp_buffer_free(dev
);
508 substream
->runtime
->dma_area
= NULL
;
510 dev
->dmasound
.blocks
= periods
;
511 dev
->dmasound
.blksize
= period_size
;
512 dev
->dmasound
.bufsize
= period_size
* periods
;
514 err
= dsp_buffer_init(dev
);
516 dev
->dmasound
.blocks
= 0;
517 dev
->dmasound
.blksize
= 0;
518 dev
->dmasound
.bufsize
= 0;
522 if (0 != (err
= videobuf_pci_dma_map(dev
->pci
, &dev
->dmasound
.dma
))) {
523 dsp_buffer_free(dev
);
526 if (0 != (err
= saa7134_pgtable_alloc(dev
->pci
,&dev
->dmasound
.pt
))) {
527 videobuf_pci_dma_unmap(dev
->pci
, &dev
->dmasound
.dma
);
528 dsp_buffer_free(dev
);
531 if (0 != (err
= saa7134_pgtable_build(dev
->pci
,&dev
->dmasound
.pt
,
532 dev
->dmasound
.dma
.sglist
,
533 dev
->dmasound
.dma
.sglen
,
535 saa7134_pgtable_free(dev
->pci
, &dev
->dmasound
.pt
);
536 videobuf_pci_dma_unmap(dev
->pci
, &dev
->dmasound
.dma
);
537 dsp_buffer_free(dev
);
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 */
545 substream
->runtime
->dma_area
= dev
->dmasound
.dma
.vmalloc
;
546 substream
->runtime
->dma_bytes
= dev
->dmasound
.bufsize
;
547 substream
->runtime
->dma_addr
= 0;
554 * ALSA hardware release
556 * - One of the ALSA capture callbacks.
558 * Called after closing the device, but before snd_card_saa7134_capture_close
559 * It stops the DMA audio and releases the buffers.
563 static int snd_card_saa7134_hw_free(struct snd_pcm_substream
* substream
)
565 snd_card_saa7134_t
*saa7134
= snd_pcm_substream_chip(substream
);
566 struct saa7134_dev
*dev
;
570 if (substream
->runtime
->dma_area
) {
571 saa7134_pgtable_free(dev
->pci
, &dev
->dmasound
.pt
);
572 videobuf_pci_dma_unmap(dev
->pci
, &dev
->dmasound
.dma
);
573 dsp_buffer_free(dev
);
574 substream
->runtime
->dma_area
= NULL
;
581 * ALSA capture finish
583 * - One of the ALSA capture callbacks.
585 * Called after closing the device.
589 static int snd_card_saa7134_capture_close(struct snd_pcm_substream
* substream
)
591 snd_card_saa7134_t
*saa7134
= snd_pcm_substream_chip(substream
);
592 struct saa7134_dev
*dev
= saa7134
->dev
;
594 if (saa7134
->mute_was_on
) {
596 saa7134_tvaudio_setmute(dev
);
604 * - One of the ALSA capture callbacks.
606 * Called when opening the device. It creates and populates the PCM
611 static int snd_card_saa7134_capture_open(struct snd_pcm_substream
* substream
)
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
;
619 mutex_lock(&dev
->dmasound
.lock
);
621 dev
->dmasound
.read_count
= 0;
622 dev
->dmasound
.read_offset
= 0;
624 amux
= dev
->input
->amux
;
625 if ((amux
< 1) || (amux
> 3))
627 dev
->dmasound
.input
= amux
- 1;
629 mutex_unlock(&dev
->dmasound
.lock
);
631 pcm
= kzalloc(sizeof(*pcm
), GFP_KERNEL
);
635 pcm
->dev
=saa7134
->dev
;
637 spin_lock_init(&pcm
->lock
);
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
;
644 if (dev
->ctl_mute
!= 0) {
645 saa7134
->mute_was_on
= 1;
647 saa7134_tvaudio_setmute(dev
);
650 if ((err
= snd_pcm_hw_constraint_integer(runtime
, SNDRV_PCM_HW_PARAM_PERIODS
)) < 0)
657 * page callback (needed for mmap)
660 static struct page
*snd_card_saa7134_page(struct snd_pcm_substream
*substream
,
661 unsigned long offset
)
663 void *pageptr
= substream
->runtime
->dma_area
+ offset
;
664 return vmalloc_to_page(pageptr
);
668 * ALSA capture callbacks definition
671 static struct snd_pcm_ops snd_card_saa7134_capture_ops
= {
672 .open
= snd_card_saa7134_capture_open
,
673 .close
= snd_card_saa7134_capture_close
,
674 .ioctl
= snd_pcm_lib_ioctl
,
675 .hw_params
= snd_card_saa7134_hw_params
,
676 .hw_free
= snd_card_saa7134_hw_free
,
677 .prepare
= snd_card_saa7134_capture_prepare
,
678 .trigger
= snd_card_saa7134_capture_trigger
,
679 .pointer
= snd_card_saa7134_capture_pointer
,
680 .page
= snd_card_saa7134_page
,
686 * Called when initializing the board. Sets up the name and hooks up
691 static int snd_card_saa7134_pcm(snd_card_saa7134_t
*saa7134
, int device
)
696 if ((err
= snd_pcm_new(saa7134
->card
, "SAA7134 PCM", device
, 0, 1, &pcm
)) < 0)
698 snd_pcm_set_ops(pcm
, SNDRV_PCM_STREAM_CAPTURE
, &snd_card_saa7134_capture_ops
);
699 pcm
->private_data
= saa7134
;
701 strcpy(pcm
->name
, "SAA7134 PCM");
705 #define SAA713x_VOLUME(xname, xindex, addr) \
706 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
707 .info = snd_saa7134_volume_info, \
708 .get = snd_saa7134_volume_get, .put = snd_saa7134_volume_put, \
709 .private_value = addr }
711 static int snd_saa7134_volume_info(struct snd_kcontrol
* kcontrol
,
712 struct snd_ctl_elem_info
* uinfo
)
714 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
716 uinfo
->value
.integer
.min
= 0;
717 uinfo
->value
.integer
.max
= 20;
721 static int snd_saa7134_volume_get(struct snd_kcontrol
* kcontrol
,
722 struct snd_ctl_elem_value
* ucontrol
)
724 snd_card_saa7134_t
*chip
= snd_kcontrol_chip(kcontrol
);
725 int addr
= kcontrol
->private_value
;
727 ucontrol
->value
.integer
.value
[0] = chip
->mixer_volume
[addr
][0];
728 ucontrol
->value
.integer
.value
[1] = chip
->mixer_volume
[addr
][1];
732 static int snd_saa7134_volume_put(struct snd_kcontrol
* kcontrol
,
733 struct snd_ctl_elem_value
* ucontrol
)
735 snd_card_saa7134_t
*chip
= snd_kcontrol_chip(kcontrol
);
736 struct saa7134_dev
*dev
= chip
->dev
;
738 int change
, addr
= kcontrol
->private_value
;
741 left
= ucontrol
->value
.integer
.value
[0];
746 right
= ucontrol
->value
.integer
.value
[1];
751 spin_lock_irq(&chip
->mixer_lock
);
753 if (chip
->mixer_volume
[addr
][0] != left
) {
757 if (chip
->mixer_volume
[addr
][1] != right
) {
762 switch (dev
->pci
->device
) {
763 case PCI_DEVICE_ID_PHILIPS_SAA7134
:
765 case MIXER_ADDR_TVTUNER
:
768 case MIXER_ADDR_LINE1
:
769 saa_andorb(SAA7134_ANALOG_IO_SELECT
, 0x10,
770 (left
> 10) ? 0x00 : 0x10);
772 case MIXER_ADDR_LINE2
:
773 saa_andorb(SAA7134_ANALOG_IO_SELECT
, 0x20,
774 (left
> 10) ? 0x00 : 0x20);
778 case PCI_DEVICE_ID_PHILIPS_SAA7133
:
779 case PCI_DEVICE_ID_PHILIPS_SAA7135
:
781 case MIXER_ADDR_TVTUNER
:
784 case MIXER_ADDR_LINE1
:
785 saa_andorb(0x0594, 0x10,
786 (left
> 10) ? 0x00 : 0x10);
788 case MIXER_ADDR_LINE2
:
789 saa_andorb(0x0594, 0x20,
790 (left
> 10) ? 0x00 : 0x20);
795 chip
->mixer_volume
[addr
][0] = left
;
796 chip
->mixer_volume
[addr
][1] = right
;
798 spin_unlock_irq(&chip
->mixer_lock
);
802 #define SAA713x_CAPSRC(xname, xindex, addr) \
803 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
804 .info = snd_saa7134_capsrc_info, \
805 .get = snd_saa7134_capsrc_get, .put = snd_saa7134_capsrc_put, \
806 .private_value = addr }
808 static int snd_saa7134_capsrc_info(struct snd_kcontrol
* kcontrol
,
809 struct snd_ctl_elem_info
* uinfo
)
811 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
813 uinfo
->value
.integer
.min
= 0;
814 uinfo
->value
.integer
.max
= 1;
818 static int snd_saa7134_capsrc_get(struct snd_kcontrol
* kcontrol
,
819 struct snd_ctl_elem_value
* ucontrol
)
821 snd_card_saa7134_t
*chip
= snd_kcontrol_chip(kcontrol
);
822 int addr
= kcontrol
->private_value
;
824 spin_lock_irq(&chip
->mixer_lock
);
825 ucontrol
->value
.integer
.value
[0] = chip
->capture_source
[addr
][0];
826 ucontrol
->value
.integer
.value
[1] = chip
->capture_source
[addr
][1];
827 spin_unlock_irq(&chip
->mixer_lock
);
832 static int snd_saa7134_capsrc_put(struct snd_kcontrol
* kcontrol
,
833 struct snd_ctl_elem_value
* ucontrol
)
835 snd_card_saa7134_t
*chip
= snd_kcontrol_chip(kcontrol
);
836 int change
, addr
= kcontrol
->private_value
;
840 struct saa7134_dev
*dev
;
844 left
= ucontrol
->value
.integer
.value
[0] & 1;
845 right
= ucontrol
->value
.integer
.value
[1] & 1;
846 spin_lock_irq(&chip
->mixer_lock
);
848 change
= chip
->capture_source
[addr
][0] != left
||
849 chip
->capture_source
[addr
][1] != right
;
850 chip
->capture_source
[addr
][0] = left
;
851 chip
->capture_source
[addr
][1] = right
;
852 dev
->dmasound
.input
=addr
;
853 spin_unlock_irq(&chip
->mixer_lock
);
857 switch (dev
->pci
->device
) {
859 case PCI_DEVICE_ID_PHILIPS_SAA7134
:
861 case MIXER_ADDR_TVTUNER
:
862 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL
, 0xc0, 0xc0);
863 saa_andorb(SAA7134_SIF_SAMPLE_FREQ
, 0x03, 0x00);
865 case MIXER_ADDR_LINE1
:
866 case MIXER_ADDR_LINE2
:
867 analog_io
= (MIXER_ADDR_LINE1
== addr
) ? 0x00 : 0x08;
868 rate
= (32000 == dev
->dmasound
.rate
) ? 0x01 : 0x03;
869 saa_andorb(SAA7134_ANALOG_IO_SELECT
, 0x08, analog_io
);
870 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL
, 0xc0, 0x80);
871 saa_andorb(SAA7134_SIF_SAMPLE_FREQ
, 0x03, rate
);
876 case PCI_DEVICE_ID_PHILIPS_SAA7133
:
877 case PCI_DEVICE_ID_PHILIPS_SAA7135
:
878 xbarin
= 0x03; // adc
881 case MIXER_ADDR_TVTUNER
:
882 xbarin
= 0; // Demodulator
885 case MIXER_ADDR_LINE1
:
886 anabar
= 0; // aux1, aux1
888 case MIXER_ADDR_LINE2
:
889 anabar
= 9; // aux2, aux2
893 /* output xbar always main channel */
894 saa_dsp_writel(dev
, SAA7133_DIGITAL_OUTPUT_SEL1
, 0xbbbb10);
896 if (left
|| right
) { // We've got data, turn the input on
897 saa_dsp_writel(dev
, SAA7133_DIGITAL_INPUT_XBAR1
, xbarin
);
898 saa_writel(SAA7133_ANALOG_IO_SELECT
, anabar
);
900 saa_dsp_writel(dev
, SAA7133_DIGITAL_INPUT_XBAR1
, 0);
901 saa_writel(SAA7133_ANALOG_IO_SELECT
, 0);
910 static struct snd_kcontrol_new snd_saa7134_controls
[] = {
911 SAA713x_VOLUME("Video Volume", 0, MIXER_ADDR_TVTUNER
),
912 SAA713x_CAPSRC("Video Capture Switch", 0, MIXER_ADDR_TVTUNER
),
913 SAA713x_VOLUME("Line Volume", 1, MIXER_ADDR_LINE1
),
914 SAA713x_CAPSRC("Line Capture Switch", 1, MIXER_ADDR_LINE1
),
915 SAA713x_VOLUME("Line Volume", 2, MIXER_ADDR_LINE2
),
916 SAA713x_CAPSRC("Line Capture Switch", 2, MIXER_ADDR_LINE2
),
922 * Called when initializing the board. Sets up the name and hooks up
927 static int snd_card_saa7134_new_mixer(snd_card_saa7134_t
* chip
)
929 struct snd_card
*card
= chip
->card
;
933 snd_assert(chip
!= NULL
, return -EINVAL
);
934 strcpy(card
->mixername
, "SAA7134 Mixer");
936 for (idx
= 0; idx
< ARRAY_SIZE(snd_saa7134_controls
); idx
++) {
937 if ((err
= snd_ctl_add(card
, snd_ctl_new1(&snd_saa7134_controls
[idx
], chip
))) < 0)
943 static void snd_saa7134_free(struct snd_card
* card
)
945 snd_card_saa7134_t
*chip
= card
->private_data
;
947 if (chip
->dev
->dmasound
.priv_data
== NULL
)
950 if (chip
->irq
>= 0) {
951 synchronize_irq(chip
->irq
);
952 free_irq(chip
->irq
, &chip
->dev
->dmasound
);
955 chip
->dev
->dmasound
.priv_data
= NULL
;
960 * ALSA initialization
962 * Called by the init routine, once for each saa7134 device present,
963 * it creates the basic structures and registers the ALSA devices
967 static int alsa_card_saa7134_create(struct saa7134_dev
*dev
, int devnum
)
970 struct snd_card
*card
;
971 snd_card_saa7134_t
*chip
;
975 if (devnum
>= SNDRV_CARDS
)
980 card
= snd_card_new(index
[devnum
], id
[devnum
], THIS_MODULE
, sizeof(snd_card_saa7134_t
));
985 strcpy(card
->driver
, "SAA7134");
987 /* Card "creation" */
989 card
->private_free
= snd_saa7134_free
;
990 chip
= (snd_card_saa7134_t
*) card
->private_data
;
992 spin_lock_init(&chip
->lock
);
993 spin_lock_init(&chip
->mixer_lock
);
999 chip
->pci
= dev
->pci
;
1000 chip
->iobase
= pci_resource_start(dev
->pci
, 0);
1003 err
= request_irq(dev
->pci
->irq
, saa7134_alsa_irq
,
1004 IRQF_SHARED
| IRQF_DISABLED
, dev
->name
,
1005 (void*) &dev
->dmasound
);
1008 printk(KERN_ERR
"%s: can't get IRQ %d for ALSA\n",
1009 dev
->name
, dev
->pci
->irq
);
1013 chip
->irq
= dev
->pci
->irq
;
1015 mutex_init(&dev
->dmasound
.lock
);
1017 if ((err
= snd_card_saa7134_new_mixer(chip
)) < 0)
1020 if ((err
= snd_card_saa7134_pcm(chip
, 0)) < 0)
1023 snd_card_set_dev(card
, &chip
->pci
->dev
);
1025 /* End of "creation" */
1027 strcpy(card
->shortname
, "SAA7134");
1028 sprintf(card
->longname
, "%s at 0x%lx irq %d",
1029 chip
->dev
->name
, chip
->iobase
, chip
->irq
);
1031 printk(KERN_INFO
"%s/alsa: %s registered as card %d\n",dev
->name
,card
->longname
,index
[devnum
]);
1033 if ((err
= snd_card_register(card
)) == 0) {
1034 snd_saa7134_cards
[devnum
] = card
;
1039 snd_card_free(card
);
1044 static int alsa_device_init(struct saa7134_dev
*dev
)
1046 dev
->dmasound
.priv_data
= dev
;
1047 alsa_card_saa7134_create(dev
,dev
->nr
);
1051 static int alsa_device_exit(struct saa7134_dev
*dev
)
1054 snd_card_free(snd_saa7134_cards
[dev
->nr
]);
1055 snd_saa7134_cards
[dev
->nr
] = NULL
;
1060 * Module initializer
1062 * Loops through present saa7134 cards, and assigns an ALSA device
1067 static int saa7134_alsa_init(void)
1069 struct saa7134_dev
*dev
= NULL
;
1070 struct list_head
*list
;
1072 if (!saa7134_dmasound_init
&& !saa7134_dmasound_exit
) {
1073 saa7134_dmasound_init
= alsa_device_init
;
1074 saa7134_dmasound_exit
= alsa_device_exit
;
1076 printk(KERN_WARNING
"saa7134 ALSA: can't load, DMA sound handler already assigned (probably to OSS)\n");
1080 printk(KERN_INFO
"saa7134 ALSA driver for DMA sound loaded\n");
1082 list_for_each(list
,&saa7134_devlist
) {
1083 dev
= list_entry(list
, struct saa7134_dev
, devlist
);
1084 if (dev
->dmasound
.priv_data
== NULL
) {
1085 alsa_device_init(dev
);
1087 printk(KERN_ERR
"saa7134 ALSA: DMA sound is being handled by OSS. ignoring %s\n",dev
->name
);
1093 printk(KERN_INFO
"saa7134 ALSA: no saa7134 cards found\n");
1103 static void saa7134_alsa_exit(void)
1107 for (idx
= 0; idx
< SNDRV_CARDS
; idx
++) {
1108 snd_card_free(snd_saa7134_cards
[idx
]);
1111 saa7134_dmasound_init
= NULL
;
1112 saa7134_dmasound_exit
= NULL
;
1113 printk(KERN_INFO
"saa7134 ALSA driver for DMA sound unloaded\n");
1118 /* We initialize this late, to make sure the sound system is up and running */
1119 late_initcall(saa7134_alsa_init
);
1120 module_exit(saa7134_alsa_exit
);
1121 MODULE_LICENSE("GPL");
1122 MODULE_AUTHOR("Ricardo Cerqueira");