![Oldřich Jedlička](/assets/img/avatar_default.png)
The patch introduces new snd_saa7134_capsrc_set (code taken from snd_saa7134_capsrc_put) that updates also the ALSA capture controls during snd_card_saa7134_capture_prepare and snd_saa7134_capsrc_put. There can be much more work done in order to unify the control of the card (now the card's capture source is tuned/switched in saa7134-video.c too), but I don't have enough time. This work could be a starting point, but it can be applied as-is too (it doesn't need any further work to make it working). Signed-off-by: Oldřich Jedlička <oldium.pro@seznam.cz> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
1212 lines
29 KiB
C
1212 lines
29 KiB
C
/*
|
|
* SAA713x ALSA support for V4L
|
|
*
|
|
* 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 <linux/init.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/time.h>
|
|
#include <linux/wait.h>
|
|
#include <linux/module.h>
|
|
#include <sound/core.h>
|
|
#include <sound/control.h>
|
|
#include <sound/pcm.h>
|
|
#include <sound/pcm_params.h>
|
|
#include <sound/initval.h>
|
|
#include <linux/interrupt.h>
|
|
|
|
#include "saa7134.h"
|
|
#include "saa7134-reg.h"
|
|
|
|
static unsigned int debug;
|
|
module_param(debug, int, 0644);
|
|
MODULE_PARM_DESC(debug,"enable debug messages [alsa]");
|
|
|
|
/*
|
|
* Configuration macros
|
|
*/
|
|
|
|
/* defaults */
|
|
#define MIXER_ADDR_UNSELECTED -1
|
|
#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)] = 1};
|
|
|
|
module_param_array(index, int, NULL, 0444);
|
|
module_param_array(enable, int, NULL, 0444);
|
|
MODULE_PARM_DESC(index, "Index value for SAA7134 capture interface(s).");
|
|
MODULE_PARM_DESC(enable, "Enable (or not) the SAA7134 capture interface(s).");
|
|
|
|
#define dprintk(fmt, arg...) if (debug) \
|
|
printk(KERN_DEBUG "%s/alsa: " fmt, dev->name , ##arg)
|
|
|
|
|
|
|
|
/*
|
|
* Main chip structure
|
|
*/
|
|
|
|
typedef struct snd_card_saa7134 {
|
|
struct snd_card *card;
|
|
spinlock_t mixer_lock;
|
|
int mixer_volume[MIXER_ADDR_LAST+1][2];
|
|
int capture_source_addr;
|
|
int capture_source[2];
|
|
struct snd_kcontrol *capture_ctl[MIXER_ADDR_LAST+1];
|
|
struct pci_dev *pci;
|
|
struct saa7134_dev *dev;
|
|
|
|
unsigned long iobase;
|
|
s16 irq;
|
|
u16 mute_was_on;
|
|
|
|
spinlock_t lock;
|
|
} snd_card_saa7134_t;
|
|
|
|
|
|
/*
|
|
* PCM structure
|
|
*/
|
|
|
|
typedef struct snd_card_saa7134_pcm {
|
|
struct saa7134_dev *dev;
|
|
|
|
spinlock_t lock;
|
|
|
|
struct snd_pcm_substream *substream;
|
|
} snd_card_saa7134_pcm_t;
|
|
|
|
static struct snd_card *snd_saa7134_cards[SNDRV_CARDS];
|
|
|
|
|
|
/*
|
|
* saa7134 DMA audio stop
|
|
*
|
|
* Called when the capture device is released or the buffer overflows
|
|
*
|
|
* - Copied verbatim from saa7134-oss's dsp_dma_stop.
|
|
*
|
|
*/
|
|
|
|
static void saa7134_dma_stop(struct saa7134_dev *dev)
|
|
{
|
|
dev->dmasound.dma_blk = -1;
|
|
dev->dmasound.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.
|
|
*
|
|
*/
|
|
|
|
static void saa7134_dma_start(struct saa7134_dev *dev)
|
|
{
|
|
dev->dmasound.dma_blk = 0;
|
|
dev->dmasound.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.
|
|
*
|
|
*/
|
|
|
|
static void saa7134_irq_alsa_done(struct saa7134_dev *dev,
|
|
unsigned long status)
|
|
{
|
|
int next_blk, reg = 0;
|
|
|
|
spin_lock(&dev->slock);
|
|
if (UNSET == dev->dmasound.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->dmasound.dma_blk & 0x01))
|
|
reg = SAA7134_RS_BA1(6);
|
|
} else {
|
|
/* even */
|
|
if (1 == (dev->dmasound.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->dmasound.read_count >= dev->dmasound.blksize * (dev->dmasound.blocks-2)) {
|
|
dprintk("irq: overrun [full=%d/%d] - Blocks in %d\n",dev->dmasound.read_count,
|
|
dev->dmasound.bufsize, dev->dmasound.blocks);
|
|
spin_unlock(&dev->slock);
|
|
snd_pcm_stop(dev->dmasound.substream,SNDRV_PCM_STATE_XRUN);
|
|
return;
|
|
}
|
|
|
|
/* next block addr */
|
|
next_blk = (dev->dmasound.dma_blk + 2) % dev->dmasound.blocks;
|
|
saa_writel(reg,next_blk * dev->dmasound.blksize);
|
|
if (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->dmasound.blksize, dev->dmasound.blocks, dev->dmasound.blksize, dev->dmasound.read_count);
|
|
|
|
/* update status & wake waiting readers */
|
|
dev->dmasound.dma_blk = (dev->dmasound.dma_blk + 1) % dev->dmasound.blocks;
|
|
dev->dmasound.read_count += dev->dmasound.blksize;
|
|
|
|
dev->dmasound.recording_on = reg;
|
|
|
|
if (dev->dmasound.read_count >= snd_pcm_lib_period_bytes(dev->dmasound.substream)) {
|
|
spin_unlock(&dev->slock);
|
|
snd_pcm_period_elapsed(dev->dmasound.substream);
|
|
spin_lock(&dev->slock);
|
|
}
|
|
|
|
done:
|
|
spin_unlock(&dev->slock);
|
|
|
|
}
|
|
|
|
/*
|
|
* IRQ request handler
|
|
*
|
|
* Runs along with saa7134's IRQ handler, discards anything that isn't
|
|
* DMA sound
|
|
*
|
|
*/
|
|
|
|
static irqreturn_t saa7134_alsa_irq(int irq, void *dev_id)
|
|
{
|
|
struct saa7134_dmasound *dmasound = dev_id;
|
|
struct saa7134_dev *dev = dmasound->priv_data;
|
|
|
|
unsigned long report, status;
|
|
int loop, handled = 0;
|
|
|
|
for (loop = 0; loop < 10; loop++) {
|
|
report = saa_readl(SAA7134_IRQ_REPORT);
|
|
status = saa_readl(SAA7134_IRQ_STATUS);
|
|
|
|
if (report & SAA7134_IRQ_REPORT_DONE_RA3) {
|
|
handled = 1;
|
|
saa_writel(SAA7134_IRQ_REPORT,
|
|
SAA7134_IRQ_REPORT_DONE_RA3);
|
|
saa7134_irq_alsa_done(dev, status);
|
|
} else {
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
if (loop == 10) {
|
|
dprintk("error! looping IRQ!");
|
|
}
|
|
|
|
out:
|
|
return IRQ_RETVAL(handled);
|
|
}
|
|
|
|
/*
|
|
* 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(struct snd_pcm_substream * substream,
|
|
int cmd)
|
|
{
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
|
snd_card_saa7134_pcm_t *pcm = runtime->private_data;
|
|
struct saa7134_dev *dev=pcm->dev;
|
|
int err = 0;
|
|
|
|
spin_lock(&dev->slock);
|
|
if (cmd == SNDRV_PCM_TRIGGER_START) {
|
|
/* start dma */
|
|
saa7134_dma_start(dev);
|
|
} else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
|
|
/* stop dma */
|
|
saa7134_dma_stop(dev);
|
|
} else {
|
|
err = -EINVAL;
|
|
}
|
|
spin_unlock(&dev->slock);
|
|
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* 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.
|
|
*
|
|
*/
|
|
|
|
static int dsp_buffer_init(struct saa7134_dev *dev)
|
|
{
|
|
int err;
|
|
|
|
BUG_ON(!dev->dmasound.bufsize);
|
|
|
|
videobuf_dma_init(&dev->dmasound.dma);
|
|
err = videobuf_dma_init_kernel(&dev->dmasound.dma, PCI_DMA_FROMDEVICE,
|
|
(dev->dmasound.bufsize + PAGE_SIZE) >> PAGE_SHIFT);
|
|
if (0 != err)
|
|
return err;
|
|
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)
|
|
{
|
|
BUG_ON(!dev->dmasound.blksize);
|
|
|
|
videobuf_dma_free(&dev->dmasound.dma);
|
|
|
|
dev->dmasound.blocks = 0;
|
|
dev->dmasound.blksize = 0;
|
|
dev->dmasound.bufsize = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Setting the capture source and updating the ALSA controls
|
|
*/
|
|
static int snd_saa7134_capsrc_set(struct snd_kcontrol *kcontrol,
|
|
int left, int right, bool force_notify)
|
|
{
|
|
snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
|
|
int change = 0, addr = kcontrol->private_value;
|
|
int active, old_addr;
|
|
u32 anabar, xbarin;
|
|
int analog_io, rate;
|
|
struct saa7134_dev *dev;
|
|
|
|
dev = chip->dev;
|
|
|
|
spin_lock_irq(&chip->mixer_lock);
|
|
|
|
active = left != 0 || right != 0;
|
|
old_addr = chip->capture_source_addr;
|
|
|
|
/* The active capture source cannot be deactivated */
|
|
if (active) {
|
|
change = old_addr != addr ||
|
|
chip->capture_source[0] != left ||
|
|
chip->capture_source[1] != right;
|
|
|
|
chip->capture_source[0] = left;
|
|
chip->capture_source[1] = right;
|
|
chip->capture_source_addr = addr;
|
|
dev->dmasound.input = addr;
|
|
}
|
|
spin_unlock_irq(&chip->mixer_lock);
|
|
|
|
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->dmasound.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_INPUT_XBAR1,
|
|
xbarin);
|
|
saa_writel(SAA7133_ANALOG_IO_SELECT, anabar);
|
|
} else {
|
|
saa_dsp_writel(dev, SAA7133_DIGITAL_INPUT_XBAR1,
|
|
0);
|
|
saa_writel(SAA7133_ANALOG_IO_SELECT, 0);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (change) {
|
|
if (force_notify)
|
|
snd_ctl_notify(chip->card,
|
|
SNDRV_CTL_EVENT_MASK_VALUE,
|
|
&chip->capture_ctl[addr]->id);
|
|
|
|
if (old_addr != MIXER_ADDR_UNSELECTED && old_addr != addr)
|
|
snd_ctl_notify(chip->card,
|
|
SNDRV_CTL_EVENT_MASK_VALUE,
|
|
&chip->capture_ctl[old_addr]->id);
|
|
}
|
|
|
|
return change;
|
|
}
|
|
|
|
/*
|
|
* 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(struct snd_pcm_substream * substream)
|
|
{
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
|
int bswap, sign;
|
|
u32 fmt, control;
|
|
snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
|
|
struct saa7134_dev *dev;
|
|
snd_card_saa7134_pcm_t *pcm = runtime->private_data;
|
|
|
|
pcm->dev->dmasound.substream = substream;
|
|
|
|
dev = saa7134->dev;
|
|
|
|
if (snd_pcm_format_width(runtime->format) == 8)
|
|
fmt = 0x00;
|
|
else
|
|
fmt = 0x01;
|
|
|
|
if (snd_pcm_format_signed(runtime->format))
|
|
sign = 1;
|
|
else
|
|
sign = 0;
|
|
|
|
if (snd_pcm_format_big_endian(runtime->format))
|
|
bswap = 1;
|
|
else
|
|
bswap = 0;
|
|
|
|
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->dmasound.input) ? 0xc0 : 0x80;
|
|
saa_writeb(SAA7134_NUM_SAMPLES0, ((dev->dmasound.blksize - 1) & 0x0000ff));
|
|
saa_writeb(SAA7134_NUM_SAMPLES1, ((dev->dmasound.blksize - 1) & 0x00ff00) >> 8);
|
|
saa_writeb(SAA7134_NUM_SAMPLES2, ((dev->dmasound.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->dmasound.blksize -1);
|
|
saa_writel(SAA7133_AUDIO_CHANNEL, 0x543210 | (fmt << 24));
|
|
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->dmasound.pt.dma >> 12);
|
|
if (bswap)
|
|
control |= SAA7134_RS_CONTROL_BSWAP;
|
|
|
|
saa_writel(SAA7134_RS_BA1(6),0);
|
|
saa_writel(SAA7134_RS_BA2(6),dev->dmasound.blksize);
|
|
saa_writel(SAA7134_RS_PITCH(6),0);
|
|
saa_writel(SAA7134_RS_CONTROL(6),control);
|
|
|
|
dev->dmasound.rate = runtime->rate;
|
|
|
|
/* Setup and update the card/ALSA controls */
|
|
snd_saa7134_capsrc_set(saa7134->capture_ctl[dev->dmasound.input], 1, 1,
|
|
true);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
/*
|
|
* 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(struct snd_pcm_substream * substream)
|
|
{
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
|
snd_card_saa7134_pcm_t *pcm = runtime->private_data;
|
|
struct saa7134_dev *dev=pcm->dev;
|
|
|
|
if (dev->dmasound.read_count) {
|
|
dev->dmasound.read_count -= snd_pcm_lib_period_bytes(substream);
|
|
dev->dmasound.read_offset += snd_pcm_lib_period_bytes(substream);
|
|
if (dev->dmasound.read_offset == dev->dmasound.bufsize)
|
|
dev->dmasound.read_offset = 0;
|
|
}
|
|
|
|
return bytes_to_frames(runtime, dev->dmasound.read_offset);
|
|
}
|
|
|
|
/*
|
|
* ALSA hardware capabilities definition
|
|
*
|
|
* Report only 32kHz for ALSA:
|
|
*
|
|
* - SAA7133/35 uses DDEP (DemDec Easy Programming mode), which works in 32kHz
|
|
* only
|
|
* - SAA7134 for TV mode uses DemDec mode (32kHz)
|
|
* - Radio works in 32kHz only
|
|
* - When recording 48kHz from Line1/Line2, switching of capture source to TV
|
|
* means
|
|
* switching to 32kHz without any frequency translation
|
|
*/
|
|
|
|
static struct snd_pcm_hardware snd_card_saa7134_capture =
|
|
{
|
|
.info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
|
|
SNDRV_PCM_INFO_BLOCK_TRANSFER |
|
|
SNDRV_PCM_INFO_MMAP_VALID),
|
|
.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,
|
|
.rates = SNDRV_PCM_RATE_32000,
|
|
.rate_min = 32000,
|
|
.rate_max = 32000,
|
|
.channels_min = 1,
|
|
.channels_max = 2,
|
|
.buffer_bytes_max = (256*1024),
|
|
.period_bytes_min = 64,
|
|
.period_bytes_max = (256*1024),
|
|
.periods_min = 4,
|
|
.periods_max = 1024,
|
|
};
|
|
|
|
static void snd_card_saa7134_runtime_free(struct snd_pcm_runtime *runtime)
|
|
{
|
|
snd_card_saa7134_pcm_t *pcm = runtime->private_data;
|
|
|
|
kfree(pcm);
|
|
}
|
|
|
|
|
|
/*
|
|
* ALSA hardware params
|
|
*
|
|
* - One of the ALSA capture callbacks.
|
|
*
|
|
* Called on initialization, right before the PCM preparation
|
|
*
|
|
*/
|
|
|
|
static int snd_card_saa7134_hw_params(struct snd_pcm_substream * substream,
|
|
struct snd_pcm_hw_params * hw_params)
|
|
{
|
|
snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
|
|
struct saa7134_dev *dev;
|
|
unsigned int period_size, periods;
|
|
int err;
|
|
|
|
period_size = params_period_bytes(hw_params);
|
|
periods = params_periods(hw_params);
|
|
|
|
if (period_size < 0x100 || period_size > 0x10000)
|
|
return -EINVAL;
|
|
if (periods < 4)
|
|
return -EINVAL;
|
|
if (period_size * periods > 1024 * 1024)
|
|
return -EINVAL;
|
|
|
|
dev = saa7134->dev;
|
|
|
|
if (dev->dmasound.blocks == periods &&
|
|
dev->dmasound.blksize == period_size)
|
|
return 0;
|
|
|
|
/* release the old buffer */
|
|
if (substream->runtime->dma_area) {
|
|
saa7134_pgtable_free(dev->pci, &dev->dmasound.pt);
|
|
videobuf_sg_dma_unmap(&dev->pci->dev, &dev->dmasound.dma);
|
|
dsp_buffer_free(dev);
|
|
substream->runtime->dma_area = NULL;
|
|
}
|
|
dev->dmasound.blocks = periods;
|
|
dev->dmasound.blksize = period_size;
|
|
dev->dmasound.bufsize = period_size * periods;
|
|
|
|
err = dsp_buffer_init(dev);
|
|
if (0 != err) {
|
|
dev->dmasound.blocks = 0;
|
|
dev->dmasound.blksize = 0;
|
|
dev->dmasound.bufsize = 0;
|
|
return err;
|
|
}
|
|
|
|
if (0 != (err = videobuf_sg_dma_map(&dev->pci->dev, &dev->dmasound.dma))) {
|
|
dsp_buffer_free(dev);
|
|
return err;
|
|
}
|
|
if (0 != (err = saa7134_pgtable_alloc(dev->pci,&dev->dmasound.pt))) {
|
|
videobuf_sg_dma_unmap(&dev->pci->dev, &dev->dmasound.dma);
|
|
dsp_buffer_free(dev);
|
|
return err;
|
|
}
|
|
if (0 != (err = saa7134_pgtable_build(dev->pci,&dev->dmasound.pt,
|
|
dev->dmasound.dma.sglist,
|
|
dev->dmasound.dma.sglen,
|
|
0))) {
|
|
saa7134_pgtable_free(dev->pci, &dev->dmasound.pt);
|
|
videobuf_sg_dma_unmap(&dev->pci->dev, &dev->dmasound.dma);
|
|
dsp_buffer_free(dev);
|
|
return err;
|
|
}
|
|
|
|
/* 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 */
|
|
|
|
substream->runtime->dma_area = dev->dmasound.dma.vmalloc;
|
|
substream->runtime->dma_bytes = dev->dmasound.bufsize;
|
|
substream->runtime->dma_addr = 0;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
/*
|
|
* ALSA hardware release
|
|
*
|
|
* - One of the ALSA capture callbacks.
|
|
*
|
|
* Called after closing the device, but before snd_card_saa7134_capture_close
|
|
* It stops the DMA audio and releases the buffers.
|
|
*
|
|
*/
|
|
|
|
static int snd_card_saa7134_hw_free(struct snd_pcm_substream * substream)
|
|
{
|
|
snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
|
|
struct saa7134_dev *dev;
|
|
|
|
dev = saa7134->dev;
|
|
|
|
if (substream->runtime->dma_area) {
|
|
saa7134_pgtable_free(dev->pci, &dev->dmasound.pt);
|
|
videobuf_sg_dma_unmap(&dev->pci->dev, &dev->dmasound.dma);
|
|
dsp_buffer_free(dev);
|
|
substream->runtime->dma_area = NULL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* ALSA capture finish
|
|
*
|
|
* - One of the ALSA capture callbacks.
|
|
*
|
|
* Called after closing the device.
|
|
*
|
|
*/
|
|
|
|
static int snd_card_saa7134_capture_close(struct snd_pcm_substream * substream)
|
|
{
|
|
snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
|
|
struct saa7134_dev *dev = saa7134->dev;
|
|
|
|
if (saa7134->mute_was_on) {
|
|
dev->ctl_mute = 1;
|
|
saa7134_tvaudio_setmute(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(struct snd_pcm_substream * substream)
|
|
{
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
|
snd_card_saa7134_pcm_t *pcm;
|
|
snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
|
|
struct saa7134_dev *dev;
|
|
int amux, err;
|
|
|
|
if (!saa7134) {
|
|
printk(KERN_ERR "BUG: saa7134 can't find device struct."
|
|
" Can't proceed with open\n");
|
|
return -ENODEV;
|
|
}
|
|
dev = saa7134->dev;
|
|
mutex_lock(&dev->dmasound.lock);
|
|
|
|
dev->dmasound.read_count = 0;
|
|
dev->dmasound.read_offset = 0;
|
|
|
|
amux = dev->input->amux;
|
|
if ((amux < 1) || (amux > 3))
|
|
amux = 1;
|
|
dev->dmasound.input = amux - 1;
|
|
|
|
mutex_unlock(&dev->dmasound.lock);
|
|
|
|
pcm = kzalloc(sizeof(*pcm), GFP_KERNEL);
|
|
if (pcm == NULL)
|
|
return -ENOMEM;
|
|
|
|
pcm->dev=saa7134->dev;
|
|
|
|
spin_lock_init(&pcm->lock);
|
|
|
|
pcm->substream = substream;
|
|
runtime->private_data = pcm;
|
|
runtime->private_free = snd_card_saa7134_runtime_free;
|
|
runtime->hw = snd_card_saa7134_capture;
|
|
|
|
if (dev->ctl_mute != 0) {
|
|
saa7134->mute_was_on = 1;
|
|
dev->ctl_mute = 0;
|
|
saa7134_tvaudio_setmute(dev);
|
|
}
|
|
|
|
err = snd_pcm_hw_constraint_integer(runtime,
|
|
SNDRV_PCM_HW_PARAM_PERIODS);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
err = snd_pcm_hw_constraint_step(runtime, 0,
|
|
SNDRV_PCM_HW_PARAM_PERIODS, 2);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* page callback (needed for mmap)
|
|
*/
|
|
|
|
static struct page *snd_card_saa7134_page(struct snd_pcm_substream *substream,
|
|
unsigned long offset)
|
|
{
|
|
void *pageptr = substream->runtime->dma_area + offset;
|
|
return vmalloc_to_page(pageptr);
|
|
}
|
|
|
|
/*
|
|
* ALSA capture callbacks definition
|
|
*/
|
|
|
|
static struct snd_pcm_ops 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,
|
|
.page = snd_card_saa7134_page,
|
|
};
|
|
|
|
/*
|
|
* 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)
|
|
{
|
|
struct snd_pcm *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(struct snd_kcontrol * kcontrol,
|
|
struct snd_ctl_elem_info * 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(struct snd_kcontrol * kcontrol,
|
|
struct snd_ctl_elem_value * ucontrol)
|
|
{
|
|
snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
|
|
int addr = kcontrol->private_value;
|
|
|
|
ucontrol->value.integer.value[0] = chip->mixer_volume[addr][0];
|
|
ucontrol->value.integer.value[1] = chip->mixer_volume[addr][1];
|
|
return 0;
|
|
}
|
|
|
|
static int snd_saa7134_volume_put(struct snd_kcontrol * kcontrol,
|
|
struct snd_ctl_elem_value * ucontrol)
|
|
{
|
|
snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
|
|
struct saa7134_dev *dev = chip->dev;
|
|
|
|
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_irq(&chip->mixer_lock);
|
|
change = 0;
|
|
if (chip->mixer_volume[addr][0] != left) {
|
|
change = 1;
|
|
right = left;
|
|
}
|
|
if (chip->mixer_volume[addr][1] != right) {
|
|
change = 1;
|
|
left = right;
|
|
}
|
|
if (change) {
|
|
switch (dev->pci->device) {
|
|
case PCI_DEVICE_ID_PHILIPS_SAA7134:
|
|
switch (addr) {
|
|
case MIXER_ADDR_TVTUNER:
|
|
left = 20;
|
|
break;
|
|
case MIXER_ADDR_LINE1:
|
|
saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x10,
|
|
(left > 10) ? 0x00 : 0x10);
|
|
break;
|
|
case MIXER_ADDR_LINE2:
|
|
saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x20,
|
|
(left > 10) ? 0x00 : 0x20);
|
|
break;
|
|
}
|
|
break;
|
|
case PCI_DEVICE_ID_PHILIPS_SAA7133:
|
|
case PCI_DEVICE_ID_PHILIPS_SAA7135:
|
|
switch (addr) {
|
|
case MIXER_ADDR_TVTUNER:
|
|
left = 20;
|
|
break;
|
|
case MIXER_ADDR_LINE1:
|
|
saa_andorb(0x0594, 0x10,
|
|
(left > 10) ? 0x00 : 0x10);
|
|
break;
|
|
case MIXER_ADDR_LINE2:
|
|
saa_andorb(0x0594, 0x20,
|
|
(left > 10) ? 0x00 : 0x20);
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
chip->mixer_volume[addr][0] = left;
|
|
chip->mixer_volume[addr][1] = right;
|
|
}
|
|
spin_unlock_irq(&chip->mixer_lock);
|
|
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(struct snd_kcontrol * kcontrol,
|
|
struct snd_ctl_elem_info * 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(struct snd_kcontrol * kcontrol,
|
|
struct snd_ctl_elem_value * ucontrol)
|
|
{
|
|
snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
|
|
int addr = kcontrol->private_value;
|
|
|
|
spin_lock_irq(&chip->mixer_lock);
|
|
if (chip->capture_source_addr == addr) {
|
|
ucontrol->value.integer.value[0] = chip->capture_source[0];
|
|
ucontrol->value.integer.value[1] = chip->capture_source[1];
|
|
} else {
|
|
ucontrol->value.integer.value[0] = 0;
|
|
ucontrol->value.integer.value[1] = 0;
|
|
}
|
|
spin_unlock_irq(&chip->mixer_lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int snd_saa7134_capsrc_put(struct snd_kcontrol * kcontrol,
|
|
struct snd_ctl_elem_value * ucontrol)
|
|
{
|
|
int left, right;
|
|
left = ucontrol->value.integer.value[0] & 1;
|
|
right = ucontrol->value.integer.value[1] & 1;
|
|
|
|
return snd_saa7134_capsrc_set(kcontrol, left, right, false);
|
|
}
|
|
|
|
static struct snd_kcontrol_new snd_saa7134_volume_controls[] = {
|
|
SAA713x_VOLUME("Video Volume", 0, MIXER_ADDR_TVTUNER),
|
|
SAA713x_VOLUME("Line Volume", 1, MIXER_ADDR_LINE1),
|
|
SAA713x_VOLUME("Line Volume", 2, MIXER_ADDR_LINE2),
|
|
};
|
|
|
|
static struct snd_kcontrol_new snd_saa7134_capture_controls[] = {
|
|
SAA713x_CAPSRC("Video Capture Switch", 0, MIXER_ADDR_TVTUNER),
|
|
SAA713x_CAPSRC("Line Capture Switch", 1, MIXER_ADDR_LINE1),
|
|
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)
|
|
{
|
|
struct snd_card *card = chip->card;
|
|
struct snd_kcontrol *kcontrol;
|
|
unsigned int idx;
|
|
int err, addr;
|
|
|
|
if (snd_BUG_ON(!chip))
|
|
return -EINVAL;
|
|
strcpy(card->mixername, "SAA7134 Mixer");
|
|
|
|
for (idx = 0; idx < ARRAY_SIZE(snd_saa7134_volume_controls); idx++) {
|
|
kcontrol = snd_ctl_new1(&snd_saa7134_volume_controls[idx],
|
|
chip);
|
|
err = snd_ctl_add(card, kcontrol);
|
|
if (err < 0)
|
|
return err;
|
|
}
|
|
|
|
for (idx = 0; idx < ARRAY_SIZE(snd_saa7134_capture_controls); idx++) {
|
|
kcontrol = snd_ctl_new1(&snd_saa7134_capture_controls[idx],
|
|
chip);
|
|
addr = snd_saa7134_capture_controls[idx].private_value;
|
|
chip->capture_ctl[addr] = kcontrol;
|
|
err = snd_ctl_add(card, kcontrol);
|
|
if (err < 0)
|
|
return err;
|
|
}
|
|
|
|
chip->capture_source_addr = MIXER_ADDR_UNSELECTED;
|
|
return 0;
|
|
}
|
|
|
|
static void snd_saa7134_free(struct snd_card * card)
|
|
{
|
|
snd_card_saa7134_t *chip = card->private_data;
|
|
|
|
if (chip->dev->dmasound.priv_data == NULL)
|
|
return;
|
|
|
|
if (chip->irq >= 0)
|
|
free_irq(chip->irq, &chip->dev->dmasound);
|
|
|
|
chip->dev->dmasound.priv_data = NULL;
|
|
|
|
}
|
|
|
|
/*
|
|
* ALSA initialization
|
|
*
|
|
* Called by the init routine, once for each saa7134 device present,
|
|
* it creates the basic structures and registers the ALSA devices
|
|
*
|
|
*/
|
|
|
|
static int alsa_card_saa7134_create(struct saa7134_dev *dev, int devnum)
|
|
{
|
|
|
|
struct snd_card *card;
|
|
snd_card_saa7134_t *chip;
|
|
int err;
|
|
|
|
|
|
if (devnum >= SNDRV_CARDS)
|
|
return -ENODEV;
|
|
if (!enable[devnum])
|
|
return -ENODEV;
|
|
|
|
err = snd_card_create(index[devnum], id[devnum], THIS_MODULE,
|
|
sizeof(snd_card_saa7134_t), &card);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
strcpy(card->driver, "SAA7134");
|
|
|
|
/* Card "creation" */
|
|
|
|
card->private_free = snd_saa7134_free;
|
|
chip = (snd_card_saa7134_t *) card->private_data;
|
|
|
|
spin_lock_init(&chip->lock);
|
|
spin_lock_init(&chip->mixer_lock);
|
|
|
|
chip->dev = dev;
|
|
|
|
chip->card = card;
|
|
|
|
chip->pci = dev->pci;
|
|
chip->iobase = pci_resource_start(dev->pci, 0);
|
|
|
|
|
|
err = request_irq(dev->pci->irq, saa7134_alsa_irq,
|
|
IRQF_SHARED | IRQF_DISABLED, dev->name,
|
|
(void*) &dev->dmasound);
|
|
|
|
if (err < 0) {
|
|
printk(KERN_ERR "%s: can't get IRQ %d for ALSA\n",
|
|
dev->name, dev->pci->irq);
|
|
goto __nodev;
|
|
}
|
|
|
|
chip->irq = dev->pci->irq;
|
|
|
|
mutex_init(&dev->dmasound.lock);
|
|
|
|
if ((err = snd_card_saa7134_new_mixer(chip)) < 0)
|
|
goto __nodev;
|
|
|
|
if ((err = snd_card_saa7134_pcm(chip, 0)) < 0)
|
|
goto __nodev;
|
|
|
|
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->dev->name, chip->iobase, chip->irq);
|
|
|
|
printk(KERN_INFO "%s/alsa: %s registered as card %d\n",dev->name,card->longname,index[devnum]);
|
|
|
|
if ((err = snd_card_register(card)) == 0) {
|
|
snd_saa7134_cards[devnum] = card;
|
|
return 0;
|
|
}
|
|
|
|
__nodev:
|
|
snd_card_free(card);
|
|
return err;
|
|
}
|
|
|
|
|
|
static int alsa_device_init(struct saa7134_dev *dev)
|
|
{
|
|
dev->dmasound.priv_data = dev;
|
|
alsa_card_saa7134_create(dev,dev->nr);
|
|
return 1;
|
|
}
|
|
|
|
static int alsa_device_exit(struct saa7134_dev *dev)
|
|
{
|
|
|
|
snd_card_free(snd_saa7134_cards[dev->nr]);
|
|
snd_saa7134_cards[dev->nr] = NULL;
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Module initializer
|
|
*
|
|
* Loops through present saa7134 cards, and assigns an ALSA device
|
|
* to each one
|
|
*
|
|
*/
|
|
|
|
static int saa7134_alsa_init(void)
|
|
{
|
|
struct saa7134_dev *dev = NULL;
|
|
struct list_head *list;
|
|
|
|
saa7134_dmasound_init = alsa_device_init;
|
|
saa7134_dmasound_exit = alsa_device_exit;
|
|
|
|
printk(KERN_INFO "saa7134 ALSA driver for DMA sound loaded\n");
|
|
|
|
list_for_each(list,&saa7134_devlist) {
|
|
dev = list_entry(list, struct saa7134_dev, devlist);
|
|
if (dev->pci->device == PCI_DEVICE_ID_PHILIPS_SAA7130)
|
|
printk(KERN_INFO "%s/alsa: %s doesn't support digital audio\n",
|
|
dev->name, saa7134_boards[dev->board].name);
|
|
else
|
|
alsa_device_init(dev);
|
|
}
|
|
|
|
if (dev == NULL)
|
|
printk(KERN_INFO "saa7134 ALSA: no saa7134 cards found\n");
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
/*
|
|
* Module destructor
|
|
*/
|
|
|
|
static void saa7134_alsa_exit(void)
|
|
{
|
|
int idx;
|
|
|
|
for (idx = 0; idx < SNDRV_CARDS; idx++) {
|
|
snd_card_free(snd_saa7134_cards[idx]);
|
|
}
|
|
|
|
saa7134_dmasound_init = NULL;
|
|
saa7134_dmasound_exit = NULL;
|
|
printk(KERN_INFO "saa7134 ALSA driver for DMA sound unloaded\n");
|
|
|
|
return;
|
|
}
|
|
|
|
/* We initialize this late, to make sure the sound system is up and running */
|
|
late_initcall(saa7134_alsa_init);
|
|
module_exit(saa7134_alsa_exit);
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_AUTHOR("Ricardo Cerqueira");
|