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linux/drivers/media/video/saa7134/saa7134-alsa.c
Ricardo Cerqueira e8b23c0238 [PATCH] v4l: 818: cleanup some unnecessary alsa memory (de/)allocations 
- Cleanup some unnecessary ALSA memory (de/)allocations

Signed-off-by: Ricardo Cerqueira <v4l@cerqueira.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-09 07:56:22 -08:00

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/*
* SAA713x ALSA support for V4L
* Ricardo Cerqueira <v4l@cerqueira.org>
*
*
* Caveats:
* - Volume doesn't work (it's always at max)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 2
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <sound/driver.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/time.h>
#include <linux/wait.h>
#include <linux/moduleparam.h>
#include <linux/module.h>
#include <sound/core.h>
#include <sound/control.h>
#include <sound/pcm.h>
#include <sound/rawmidi.h>
#include <sound/initval.h>
#include "saa7134.h"
#include "saa7134-reg.h"
static unsigned int alsa_debug = 0;
module_param(alsa_debug, int, 0644);
MODULE_PARM_DESC(alsa_debug,"enable debug messages [alsa]");
/*
* Configuration macros
*/
/* defaults */
#define MAX_BUFFER_SIZE (256*1024)
#define USE_FORMATS SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_U16_BE
#define USE_RATE SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_48000
#define USE_RATE_MIN 32000
#define USE_RATE_MAX 48000
#define USE_CHANNELS_MIN 1
#define USE_CHANNELS_MAX 2
#ifndef USE_PERIODS_MIN
#define USE_PERIODS_MIN 2
#endif
#ifndef USE_PERIODS_MAX
#define USE_PERIODS_MAX 1024
#endif
#define MIXER_ADDR_TVTUNER 0
#define MIXER_ADDR_LINE1 1
#define MIXER_ADDR_LINE2 2
#define MIXER_ADDR_LAST 2
static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 0};
#define dprintk(fmt, arg...) if (alsa_debug) \
printk(KERN_DEBUG "%s/alsa: " fmt, dev->name , ## arg)
/*
* Main chip structure
*/
typedef struct snd_card_saa7134 {
snd_card_t *card;
spinlock_t mixer_lock;
int mixer_volume[MIXER_ADDR_LAST+1][2];
int capture_source[MIXER_ADDR_LAST+1][2];
struct pci_dev *pci;
struct saa7134_dev *saadev;
unsigned long iobase;
int irq;
spinlock_t lock;
} snd_card_saa7134_t;
/*
* PCM structure
*/
typedef struct snd_card_saa7134_pcm {
struct saa7134_dev *saadev;
spinlock_t lock;
unsigned int pcm_size; /* buffer size */
unsigned int pcm_count; /* bytes per period */
unsigned int pcm_bps; /* bytes per second */
snd_pcm_substream_t *substream;
} snd_card_saa7134_pcm_t;
static snd_card_t *snd_saa7134_cards[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
/*
* saa7134 DMA audio stop
*
* Called when the capture device is released or the buffer overflows
*
* - Copied verbatim from saa7134-oss's dsp_dma_stop. Can be dropped
* if we just share dsp_dma_stop and use it here
*
*/
static void saa7134_dma_stop(struct saa7134_dev *dev)
{
dev->oss.dma_blk = -1;
dev->oss.dma_running = 0;
saa7134_set_dmabits(dev);
}
/*
* saa7134 DMA audio start
*
* Called when preparing the capture device for use
*
* - Copied verbatim from saa7134-oss's dsp_dma_start. Can be dropped
* if we just share dsp_dma_start and use it here
*
*/
static void saa7134_dma_start(struct saa7134_dev *dev)
{
dev->oss.dma_blk = 0;
dev->oss.dma_running = 1;
saa7134_set_dmabits(dev);
}
/*
* saa7134 audio DMA IRQ handler
*
* Called whenever we get an SAA7134_IRQ_REPORT_DONE_RA3 interrupt
* Handles shifting between the 2 buffers, manages the read counters,
* and notifies ALSA when periods elapse
*
* - Mostly copied from saa7134-oss's saa7134_irq_oss_done.
*
*/
void saa7134_irq_alsa_done(struct saa7134_dev *dev, unsigned long status)
{
int next_blk, reg = 0;
spin_lock(&dev->slock);
if (UNSET == dev->oss.dma_blk) {
dprintk("irq: recording stopped\n");
goto done;
}
if (0 != (status & 0x0f000000))
dprintk("irq: lost %ld\n", (status >> 24) & 0x0f);
if (0 == (status & 0x10000000)) {
/* odd */
if (0 == (dev->oss.dma_blk & 0x01))
reg = SAA7134_RS_BA1(6);
} else {
/* even */
if (1 == (dev->oss.dma_blk & 0x01))
reg = SAA7134_RS_BA2(6);
}
if (0 == reg) {
dprintk("irq: field oops [%s]\n",
(status & 0x10000000) ? "even" : "odd");
goto done;
}
if (dev->oss.read_count >= dev->oss.blksize * (dev->oss.blocks-2)) {
dprintk("irq: overrun [full=%d/%d] - Blocks in %d\n",dev->oss.read_count,
dev->oss.bufsize, dev->oss.blocks);
saa7134_dma_stop(dev);
goto done;
}
/* next block addr */
next_blk = (dev->oss.dma_blk + 2) % dev->oss.blocks;
saa_writel(reg,next_blk * dev->oss.blksize);
if (alsa_debug > 2)
dprintk("irq: ok, %s, next_blk=%d, addr=%x, blocks=%u, size=%u, read=%u\n",
(status & 0x10000000) ? "even" : "odd ", next_blk,
next_blk * dev->oss.blksize, dev->oss.blocks, dev->oss.blksize, dev->oss.read_count);
/* update status & wake waiting readers */
dev->oss.dma_blk = (dev->oss.dma_blk + 1) % dev->oss.blocks;
dev->oss.read_count += dev->oss.blksize;
dev->oss.recording_on = reg;
if (dev->oss.read_count >= snd_pcm_lib_period_bytes(dev->oss.substream)) {
spin_unlock(&dev->slock);
snd_pcm_period_elapsed(dev->oss.substream);
spin_lock(&dev->slock);
}
done:
spin_unlock(&dev->slock);
}
/*
* ALSA capture trigger
*
* - One of the ALSA capture callbacks.
*
* Called whenever a capture is started or stopped. Must be defined,
* but there's nothing we want to do here
*
*/
static int snd_card_saa7134_capture_trigger(snd_pcm_substream_t * substream,
int cmd)
{
return 0;
}
/*
* DMA buffer config
*
* Sets the values that will later be used as the size of the buffer,
* size of the fragments, and total number of fragments.
* Must be called during the preparation stage, before memory is
* allocated
*
* - Copied verbatim from saa7134-oss. Can be dropped
* if we just share dsp_buffer_conf from OSS.
*/
static int dsp_buffer_conf(struct saa7134_dev *dev, int blksize, int blocks)
{
if (blksize < 0x100)
blksize = 0x100;
if (blksize > 0x10000)
blksize = 0x10000;
if (blocks < 2)
blocks = 2;
if ((blksize * blocks) > 1024*1024)
blocks = 1024*1024 / blksize;
dev->oss.blocks = blocks;
dev->oss.blksize = blksize;
dev->oss.bufsize = blksize * blocks;
dprintk("buffer config: %d blocks / %d bytes, %d kB total\n",
blocks,blksize,blksize * blocks / 1024);
return 0;
}
/*
* DMA buffer initialization
*
* Uses V4L functions to initialize the DMA. Shouldn't be necessary in
* ALSA, but I was unable to use ALSA's own DMA, and had to force the
* usage of V4L's
*
* - Copied verbatim from saa7134-oss. Can be dropped
* if we just share dsp_buffer_init from OSS.
*/
static int dsp_buffer_init(struct saa7134_dev *dev)
{
int err;
if (!dev->oss.bufsize)
BUG();
videobuf_dma_init(&dev->oss.dma);
err = videobuf_dma_init_kernel(&dev->oss.dma, PCI_DMA_FROMDEVICE,
(dev->oss.bufsize + PAGE_SIZE) >> PAGE_SHIFT);
if (0 != err)
return err;
return 0;
}
/*
* ALSA PCM preparation
*
* - One of the ALSA capture callbacks.
*
* Called right after the capture device is opened, this function configures
* the buffer using the previously defined functions, allocates the memory,
* sets up the hardware registers, and then starts the DMA. When this function
* returns, the audio should be flowing.
*
*/
static int snd_card_saa7134_capture_prepare(snd_pcm_substream_t * substream)
{
snd_pcm_runtime_t *runtime = substream->runtime;
int err, bswap, sign;
u32 fmt, control;
unsigned long flags;
snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
struct saa7134_dev *dev;
snd_card_saa7134_pcm_t *saapcm = runtime->private_data;
unsigned int bps;
unsigned long size;
unsigned count;
size = snd_pcm_lib_buffer_bytes(substream);
count = snd_pcm_lib_period_bytes(substream);
saapcm->saadev->oss.substream = substream;
bps = runtime->rate * runtime->channels;
bps *= snd_pcm_format_width(runtime->format);
bps /= 8;
if (bps <= 0)
return -EINVAL;
saapcm->pcm_bps = bps;
saapcm->pcm_size = snd_pcm_lib_buffer_bytes(substream);
saapcm->pcm_count = snd_pcm_lib_period_bytes(substream);
dev=saa7134->saadev;
dsp_buffer_conf(dev,saapcm->pcm_count,(saapcm->pcm_size/saapcm->pcm_count));
err = dsp_buffer_init(dev);
if (0 != err)
goto fail2;
/* prepare buffer */
if (0 != (err = videobuf_dma_pci_map(dev->pci,&dev->oss.dma)))
return err;
if (0 != (err = saa7134_pgtable_alloc(dev->pci,&dev->oss.pt)))
goto fail1;
if (0 != (err = saa7134_pgtable_build(dev->pci,&dev->oss.pt,
dev->oss.dma.sglist,
dev->oss.dma.sglen,
0)))
goto fail2;
switch (runtime->format) {
case SNDRV_PCM_FORMAT_U8:
case SNDRV_PCM_FORMAT_S8:
fmt = 0x00;
break;
case SNDRV_PCM_FORMAT_U16_LE:
case SNDRV_PCM_FORMAT_U16_BE:
case SNDRV_PCM_FORMAT_S16_LE:
case SNDRV_PCM_FORMAT_S16_BE:
fmt = 0x01;
break;
default:
err = -EINVAL;
return 1;
}
switch (runtime->format) {
case SNDRV_PCM_FORMAT_S8:
case SNDRV_PCM_FORMAT_S16_LE:
case SNDRV_PCM_FORMAT_S16_BE:
sign = 1;
break;
default:
sign = 0;
break;
}
switch (runtime->format) {
case SNDRV_PCM_FORMAT_U16_BE:
case SNDRV_PCM_FORMAT_S16_BE:
bswap = 1; break;
default:
bswap = 0; break;
}
switch (dev->pci->device) {
case PCI_DEVICE_ID_PHILIPS_SAA7134:
if (1 == runtime->channels)
fmt |= (1 << 3);
if (2 == runtime->channels)
fmt |= (3 << 3);
if (sign)
fmt |= 0x04;
fmt |= (MIXER_ADDR_TVTUNER == dev->oss.input) ? 0xc0 : 0x80;
saa_writeb(SAA7134_NUM_SAMPLES0, ((dev->oss.blksize - 1) & 0x0000ff));
saa_writeb(SAA7134_NUM_SAMPLES1, ((dev->oss.blksize - 1) & 0x00ff00) >> 8);
saa_writeb(SAA7134_NUM_SAMPLES2, ((dev->oss.blksize - 1) & 0xff0000) >> 16);
saa_writeb(SAA7134_AUDIO_FORMAT_CTRL, fmt);
break;
case PCI_DEVICE_ID_PHILIPS_SAA7133:
case PCI_DEVICE_ID_PHILIPS_SAA7135:
if (1 == runtime->channels)
fmt |= (1 << 4);
if (2 == runtime->channels)
fmt |= (2 << 4);
if (!sign)
fmt |= 0x04;
saa_writel(SAA7133_NUM_SAMPLES, dev->oss.blksize -1);
saa_writel(SAA7133_AUDIO_CHANNEL, 0x543210 | (fmt << 24));
//saa_writel(SAA7133_AUDIO_CHANNEL, 0x543210);
break;
}
dprintk("rec_start: afmt=%d ch=%d => fmt=0x%x swap=%c\n",
runtime->format, runtime->channels, fmt,
bswap ? 'b' : '-');
/* dma: setup channel 6 (= AUDIO) */
control = SAA7134_RS_CONTROL_BURST_16 |
SAA7134_RS_CONTROL_ME |
(dev->oss.pt.dma >> 12);
if (bswap)
control |= SAA7134_RS_CONTROL_BSWAP;
/* I should be able to use runtime->dma_addr in the control
byte, but it doesn't work. So I allocate the DMA using the
V4L functions, and force ALSA to use that as the DMA area */
runtime->dma_area = dev->oss.dma.vmalloc;
saa_writel(SAA7134_RS_BA1(6),0);
saa_writel(SAA7134_RS_BA2(6),dev->oss.blksize);
saa_writel(SAA7134_RS_PITCH(6),0);
saa_writel(SAA7134_RS_CONTROL(6),control);
dev->oss.rate = runtime->rate;
/* start dma */
spin_lock_irqsave(&dev->slock,flags);
saa7134_dma_start(dev);
spin_unlock_irqrestore(&dev->slock,flags);
return 0;
fail2:
saa7134_pgtable_free(dev->pci,&dev->oss.pt);
fail1:
videobuf_dma_pci_unmap(dev->pci,&dev->oss.dma);
return err;
}
/*
* ALSA pointer fetching
*
* - One of the ALSA capture callbacks.
*
* Called whenever a period elapses, it must return the current hardware
* position of the buffer.
* Also resets the read counter used to prevent overruns
*
*/
static snd_pcm_uframes_t snd_card_saa7134_capture_pointer(snd_pcm_substream_t * substream)
{
snd_pcm_runtime_t *runtime = substream->runtime;
snd_card_saa7134_pcm_t *saapcm = runtime->private_data;
struct saa7134_dev *dev=saapcm->saadev;
if (dev->oss.read_count) {
dev->oss.read_count -= snd_pcm_lib_period_bytes(substream);
dev->oss.read_offset += snd_pcm_lib_period_bytes(substream);
if (dev->oss.read_offset == dev->oss.bufsize)
dev->oss.read_offset = 0;
}
return bytes_to_frames(runtime, dev->oss.read_offset);
}
/*
* ALSA hardware capabilities definition
*/
static snd_pcm_hardware_t snd_card_saa7134_capture =
{
.info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_BLOCK_TRANSFER |
SNDRV_PCM_INFO_MMAP_VALID),
.formats = USE_FORMATS,
.rates = USE_RATE,
.rate_min = USE_RATE_MIN,
.rate_max = USE_RATE_MAX,
.channels_min = USE_CHANNELS_MIN,
.channels_max = USE_CHANNELS_MAX,
.buffer_bytes_max = MAX_BUFFER_SIZE,
.period_bytes_min = 64,
.period_bytes_max = MAX_BUFFER_SIZE,
.periods_min = USE_PERIODS_MIN,
.periods_max = USE_PERIODS_MAX,
.fifo_size = 0x08070503,
};
static void snd_card_saa7134_runtime_free(snd_pcm_runtime_t *runtime)
{
snd_card_saa7134_pcm_t *saapcm = runtime->private_data;
kfree(saapcm);
}
/*
* ALSA hardware params
*
* - One of the ALSA capture callbacks.
*
* Called on initialization, right before the PCM preparation
* Usually used in ALSA to allocate the DMA, but since we don't use the
* ALSA DMA it does nothing
*
*/
static int snd_card_saa7134_hw_params(snd_pcm_substream_t * substream,
snd_pcm_hw_params_t * hw_params)
{
return 0;
}
/*
* ALSA hardware release
*
* - One of the ALSA capture callbacks.
*
* Called after closing the device, but before snd_card_saa7134_capture_close
* Usually used in ALSA to free the DMA, but since we don't use the
* ALSA DMA I'm almost sure this isn't necessary.
*
*/
static int snd_card_saa7134_hw_free(snd_pcm_substream_t * substream)
{
return 0;
}
/*
* DMA buffer release
*
* Called after closing the device, during snd_card_saa7134_capture_close
*
*/
static int dsp_buffer_free(struct saa7134_dev *dev)
{
if (!dev->oss.blksize)
BUG();
videobuf_dma_free(&dev->oss.dma);
dev->oss.blocks = 0;
dev->oss.blksize = 0;
dev->oss.bufsize = 0;
return 0;
}
/*
* ALSA capture finish
*
* - One of the ALSA capture callbacks.
*
* Called after closing the device. It stops the DMA audio and releases
* the buffers
*
*/
static int snd_card_saa7134_capture_close(snd_pcm_substream_t * substream)
{
snd_card_saa7134_t *chip = snd_pcm_substream_chip(substream);
struct saa7134_dev *dev = chip->saadev;
unsigned long flags;
/* stop dma */
spin_lock_irqsave(&dev->slock,flags);
saa7134_dma_stop(dev);
spin_unlock_irqrestore(&dev->slock,flags);
/* unlock buffer */
saa7134_pgtable_free(dev->pci,&dev->oss.pt);
videobuf_dma_pci_unmap(dev->pci,&dev->oss.dma);
dsp_buffer_free(dev);
return 0;
}
/*
* ALSA capture start
*
* - One of the ALSA capture callbacks.
*
* Called when opening the device. It creates and populates the PCM
* structure
*
*/
static int snd_card_saa7134_capture_open(snd_pcm_substream_t * substream)
{
snd_pcm_runtime_t *runtime = substream->runtime;
snd_card_saa7134_pcm_t *saapcm;
snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
struct saa7134_dev *dev = saa7134->saadev;
int err;
down(&dev->oss.lock);
dev->oss.afmt = SNDRV_PCM_FORMAT_U8;
dev->oss.channels = 2;
dev->oss.read_count = 0;
dev->oss.read_offset = 0;
up(&dev->oss.lock);
saapcm = kcalloc(1, sizeof(*saapcm), GFP_KERNEL);
if (saapcm == NULL)
return -ENOMEM;
saapcm->saadev=saa7134->saadev;
spin_lock_init(&saapcm->lock);
saapcm->substream = substream;
runtime->private_data = saapcm;
runtime->private_free = snd_card_saa7134_runtime_free;
runtime->hw = snd_card_saa7134_capture;
if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
return err;
return 0;
}
/*
* ALSA capture callbacks definition
*/
static snd_pcm_ops_t snd_card_saa7134_capture_ops = {
.open = snd_card_saa7134_capture_open,
.close = snd_card_saa7134_capture_close,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = snd_card_saa7134_hw_params,
.hw_free = snd_card_saa7134_hw_free,
.prepare = snd_card_saa7134_capture_prepare,
.trigger = snd_card_saa7134_capture_trigger,
.pointer = snd_card_saa7134_capture_pointer,
};
/*
* ALSA PCM setup
*
* Called when initializing the board. Sets up the name and hooks up
* the callbacks
*
*/
static int snd_card_saa7134_pcm(snd_card_saa7134_t *saa7134, int device)
{
snd_pcm_t *pcm;
int err;
if ((err = snd_pcm_new(saa7134->card, "SAA7134 PCM", device, 0, 1, &pcm)) < 0)
return err;
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_card_saa7134_capture_ops);
pcm->private_data = saa7134;
pcm->info_flags = 0;
strcpy(pcm->name, "SAA7134 PCM");
return 0;
}
#define SAA713x_VOLUME(xname, xindex, addr) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
.info = snd_saa7134_volume_info, \
.get = snd_saa7134_volume_get, .put = snd_saa7134_volume_put, \
.private_value = addr }
static int snd_saa7134_volume_info(snd_kcontrol_t * kcontrol, snd_ctl_elem_info_t * uinfo)
{
uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
uinfo->count = 2;
uinfo->value.integer.min = 0;
uinfo->value.integer.max = 20;
return 0;
}
static int snd_saa7134_volume_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
unsigned long flags;
int addr = kcontrol->private_value;
spin_lock_irqsave(&chip->mixer_lock, flags);
ucontrol->value.integer.value[0] = chip->mixer_volume[addr][0];
ucontrol->value.integer.value[1] = chip->mixer_volume[addr][1];
spin_unlock_irqrestore(&chip->mixer_lock, flags);
return 0;
}
static int snd_saa7134_volume_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
unsigned long flags;
int change, addr = kcontrol->private_value;
int left, right;
left = ucontrol->value.integer.value[0];
if (left < 0)
left = 0;
if (left > 20)
left = 20;
right = ucontrol->value.integer.value[1];
if (right < 0)
right = 0;
if (right > 20)
right = 20;
spin_lock_irqsave(&chip->mixer_lock, flags);
change = chip->mixer_volume[addr][0] != left ||
chip->mixer_volume[addr][1] != right;
chip->mixer_volume[addr][0] = left;
chip->mixer_volume[addr][1] = right;
spin_unlock_irqrestore(&chip->mixer_lock, flags);
return change;
}
#define SAA713x_CAPSRC(xname, xindex, addr) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
.info = snd_saa7134_capsrc_info, \
.get = snd_saa7134_capsrc_get, .put = snd_saa7134_capsrc_put, \
.private_value = addr }
static int snd_saa7134_capsrc_info(snd_kcontrol_t * kcontrol, snd_ctl_elem_info_t * uinfo)
{
uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
uinfo->count = 2;
uinfo->value.integer.min = 0;
uinfo->value.integer.max = 1;
return 0;
}
static int snd_saa7134_capsrc_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
unsigned long flags;
int addr = kcontrol->private_value;
spin_lock_irqsave(&chip->mixer_lock, flags);
ucontrol->value.integer.value[0] = chip->capture_source[addr][0];
ucontrol->value.integer.value[1] = chip->capture_source[addr][1];
spin_unlock_irqrestore(&chip->mixer_lock, flags);
return 0;
}
static int snd_saa7134_capsrc_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
unsigned long flags;
int change, addr = kcontrol->private_value;
int left, right;
u32 anabar, xbarin;
int analog_io, rate;
struct saa7134_dev *dev;
dev = chip->saadev;
left = ucontrol->value.integer.value[0] & 1;
right = ucontrol->value.integer.value[1] & 1;
spin_lock_irqsave(&chip->mixer_lock, flags);
change = chip->capture_source[addr][0] != left ||
chip->capture_source[addr][1] != right;
chip->capture_source[addr][0] = left;
chip->capture_source[addr][1] = right;
dev->oss.input=addr;
spin_unlock_irqrestore(&chip->mixer_lock, flags);
if (change) {
switch (dev->pci->device) {
case PCI_DEVICE_ID_PHILIPS_SAA7134:
switch (addr) {
case MIXER_ADDR_TVTUNER:
saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0xc0);
saa_andorb(SAA7134_SIF_SAMPLE_FREQ, 0x03, 0x00);
break;
case MIXER_ADDR_LINE1:
case MIXER_ADDR_LINE2:
analog_io = (MIXER_ADDR_LINE1 == addr) ? 0x00 : 0x08;
rate = (32000 == dev->oss.rate) ? 0x01 : 0x03;
saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x08, analog_io);
saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0x80);
saa_andorb(SAA7134_SIF_SAMPLE_FREQ, 0x03, rate);
break;
}
break;
case PCI_DEVICE_ID_PHILIPS_SAA7133:
case PCI_DEVICE_ID_PHILIPS_SAA7135:
xbarin = 0x03; // adc
anabar = 0;
switch (addr) {
case MIXER_ADDR_TVTUNER:
xbarin = 0; // Demodulator
anabar = 2; // DACs
break;
case MIXER_ADDR_LINE1:
anabar = 0; // aux1, aux1
break;
case MIXER_ADDR_LINE2:
anabar = 9; // aux2, aux2
break;
}
/* output xbar always main channel */
saa_dsp_writel(dev, SAA7133_DIGITAL_OUTPUT_SEL1, 0xbbbb10);
if (left || right) { // We've got data, turn the input on
//saa_dsp_writel(dev, SAA7133_DIGITAL_OUTPUT_SEL2, 0x101010);
saa_dsp_writel(dev, SAA7133_DIGITAL_INPUT_XBAR1, xbarin);
saa_writel(SAA7133_ANALOG_IO_SELECT, anabar);
} else {
//saa_dsp_writel(dev, SAA7133_DIGITAL_OUTPUT_SEL2, 0x101010);
saa_dsp_writel(dev, SAA7133_DIGITAL_INPUT_XBAR1, 0);
saa_writel(SAA7133_ANALOG_IO_SELECT, 0);
}
break;
}
}
return change;
}
static snd_kcontrol_new_t snd_saa7134_controls[] = {
SAA713x_VOLUME("Video Volume", 0, MIXER_ADDR_TVTUNER),
SAA713x_CAPSRC("Video Capture Switch", 0, MIXER_ADDR_TVTUNER),
SAA713x_VOLUME("Line Volume", 1, MIXER_ADDR_LINE1),
SAA713x_CAPSRC("Line Capture Switch", 1, MIXER_ADDR_LINE1),
SAA713x_VOLUME("Line Volume", 2, MIXER_ADDR_LINE2),
SAA713x_CAPSRC("Line Capture Switch", 2, MIXER_ADDR_LINE2),
};
/*
* ALSA mixer setup
*
* Called when initializing the board. Sets up the name and hooks up
* the callbacks
*
*/
static int snd_card_saa7134_new_mixer(snd_card_saa7134_t * chip)
{
snd_card_t *card = chip->card;
unsigned int idx;
int err;
snd_assert(chip != NULL, return -EINVAL);
strcpy(card->mixername, "SAA7134 Mixer");
for (idx = 0; idx < ARRAY_SIZE(snd_saa7134_controls); idx++) {
if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_saa7134_controls[idx], chip))) < 0)
return err;
}
return 0;
}
static int snd_saa7134_free(snd_card_saa7134_t *chip)
{
return 0;
}
static int snd_saa7134_dev_free(snd_device_t *device)
{
snd_card_saa7134_t *chip = device->device_data;
return snd_saa7134_free(chip);
}
/*
* ALSA initialization
*
* Called by saa7134-core, it creates the basic structures and registers
* the ALSA devices
*
*/
int alsa_card_saa7134_create(struct saa7134_dev *saadev, unsigned int devicenum)
{
static int dev;
snd_card_t *card;
snd_card_saa7134_t *chip;
int err;
static snd_device_ops_t ops = {
.dev_free = snd_saa7134_dev_free,
};
if (dev >= SNDRV_CARDS)
return -ENODEV;
if (!enable[dev])
return -ENODEV;
if (devicenum) {
card = snd_card_new(devicenum, id[dev], THIS_MODULE, 0);
} else {
card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
}
if (card == NULL)
return -ENOMEM;
strcpy(card->driver, "SAA7134");
/* Card "creation" */
chip = kcalloc(1, sizeof(*chip), GFP_KERNEL);
if (chip == NULL) {
return -ENOMEM;
}
spin_lock_init(&chip->lock);
chip->saadev = saadev;
chip->card = card;
chip->pci = saadev->pci;
chip->irq = saadev->pci->irq;
chip->iobase = pci_resource_start(saadev->pci, 0);
if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
snd_saa7134_free(chip);
return err;
}
if ((err = snd_card_saa7134_new_mixer(chip)) < 0)
goto __nodev;
if ((err = snd_card_saa7134_pcm(chip, 0)) < 0)
goto __nodev;
spin_lock_init(&chip->mixer_lock);
snd_card_set_dev(card, &chip->pci->dev);
/* End of "creation" */
strcpy(card->shortname, "SAA7134");
sprintf(card->longname, "%s at 0x%lx irq %d",
chip->saadev->name, chip->iobase, chip->irq);
if ((err = snd_card_register(card)) == 0) {
snd_saa7134_cards[dev] = card;
return 0;
}
__nodev:
snd_card_free(card);
kfree(card);
return err;
}
void alsa_card_saa7134_exit(void)
{
int idx;
for (idx = 0; idx < SNDRV_CARDS; idx++) {
snd_card_free(snd_saa7134_cards[idx]);
}
}
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