blob: 7448e386a804cf0f6b50f202859d2fb9bcadb65b [file] [log] [blame]
/*
*
* device driver for philips saa7134 based TV cards
* oss dsp interface
*
* (c) 2001,02 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
* 2005 conversion to standalone module:
* Ricardo Cerqueira <v4l@cerqueira.org>
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/init.h>
#include <linux/list.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
#include <linux/interrupt.h>
#include <linux/slab.h>
#include <linux/sound.h>
#include <linux/soundcard.h>
#include "saa7134-reg.h"
#include "saa7134.h"
/* ------------------------------------------------------------------ */
static unsigned int debug = 0;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug,"enable debug messages [oss]");
static unsigned int rate = 0;
module_param(rate, int, 0444);
MODULE_PARM_DESC(rate,"sample rate (valid are: 32000,48000)");
static unsigned int dsp_nr[] = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
MODULE_PARM_DESC(dsp_nr, "device numbers for SAA7134 capture interface(s).");
module_param_array(dsp_nr, int, NULL, 0444);
static unsigned int mixer_nr[] = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
MODULE_PARM_DESC(mixer_nr, "mixer numbers for SAA7134 capture interface(s).");
module_param_array(mixer_nr, int, NULL, 0444);
#define dprintk(fmt, arg...) if (debug) \
printk(KERN_DEBUG "%s/oss: " fmt, dev->name , ## arg)
/* ------------------------------------------------------------------ */
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->dmasound.blocks = blocks;
dev->dmasound.blksize = blksize;
dev->dmasound.bufsize = blksize * blocks;
dprintk("buffer config: %d blocks / %d bytes, %d kB total\n",
blocks,blksize,blksize * blocks / 1024);
return 0;
}
static int dsp_buffer_init(struct saa7134_dev *dev)
{
int err;
if (!dev->dmasound.bufsize)
BUG();
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;
}
static int dsp_buffer_free(struct saa7134_dev *dev)
{
if (!dev->dmasound.blksize)
BUG();
videobuf_dma_free(&dev->dmasound.dma);
dev->dmasound.blocks = 0;
dev->dmasound.blksize = 0;
dev->dmasound.bufsize = 0;
return 0;
}
static void dsp_dma_start(struct saa7134_dev *dev)
{
dev->dmasound.dma_blk = 0;
dev->dmasound.dma_running = 1;
saa7134_set_dmabits(dev);
}
static void dsp_dma_stop(struct saa7134_dev *dev)
{
dev->dmasound.dma_blk = -1;
dev->dmasound.dma_running = 0;
saa7134_set_dmabits(dev);
}
static int dsp_rec_start(struct saa7134_dev *dev)
{
int err, bswap, sign;
u32 fmt, control;
unsigned long flags;
/* prepare buffer */
if (0 != (err = videobuf_dma_pci_map(dev->pci,&dev->dmasound.dma)))
return err;
if (0 != (err = saa7134_pgtable_alloc(dev->pci,&dev->dmasound.pt)))
goto fail1;
if (0 != (err = saa7134_pgtable_build(dev->pci,&dev->dmasound.pt,
dev->dmasound.dma.sglist,
dev->dmasound.dma.sglen,
0)))
goto fail2;
/* sample format */
switch (dev->dmasound.afmt) {
case AFMT_U8:
case AFMT_S8: fmt = 0x00; break;
case AFMT_U16_LE:
case AFMT_U16_BE:
case AFMT_S16_LE:
case AFMT_S16_BE: fmt = 0x01; break;
default:
err = -EINVAL;
goto fail2;
}
switch (dev->dmasound.afmt) {
case AFMT_S8:
case AFMT_S16_LE:
case AFMT_S16_BE: sign = 1; break;
default: sign = 0; break;
}
switch (dev->dmasound.afmt) {
case AFMT_U16_BE:
case AFMT_S16_BE: bswap = 1; break;
default: bswap = 0; break;
}
switch (dev->pci->device) {
case PCI_DEVICE_ID_PHILIPS_SAA7134:
if (1 == dev->dmasound.channels)
fmt |= (1 << 3);
if (2 == dev->dmasound.channels)
fmt |= (3 << 3);
if (sign)
fmt |= 0x04;
fmt |= (TV == 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 == dev->dmasound.channels)
fmt |= (1 << 4);
if (2 == dev->dmasound.channels)
fmt |= (2 << 4);
if (!sign)
fmt |= 0x04;
saa_writel(SAA7133_NUM_SAMPLES, dev->dmasound.blksize -4);
saa_writel(SAA7133_AUDIO_CHANNEL, 0x543210 | (fmt << 24));
break;
}
dprintk("rec_start: afmt=%d ch=%d => fmt=0x%x swap=%c\n",
dev->dmasound.afmt, dev->dmasound.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);
/* start dma */
dev->dmasound.recording_on = 1;
spin_lock_irqsave(&dev->slock,flags);
dsp_dma_start(dev);
spin_unlock_irqrestore(&dev->slock,flags);
return 0;
fail2:
saa7134_pgtable_free(dev->pci,&dev->dmasound.pt);
fail1:
videobuf_dma_pci_unmap(dev->pci,&dev->dmasound.dma);
return err;
}
static int dsp_rec_stop(struct saa7134_dev *dev)
{
unsigned long flags;
dprintk("rec_stop dma_blk=%d\n",dev->dmasound.dma_blk);
/* stop dma */
dev->dmasound.recording_on = 0;
spin_lock_irqsave(&dev->slock,flags);
dsp_dma_stop(dev);
spin_unlock_irqrestore(&dev->slock,flags);
/* unlock buffer */
saa7134_pgtable_free(dev->pci,&dev->dmasound.pt);
videobuf_dma_pci_unmap(dev->pci,&dev->dmasound.dma);
return 0;
}
/* ------------------------------------------------------------------ */
static int dsp_open(struct inode *inode, struct file *file)
{
int minor = iminor(inode);
struct saa7134_dev *h,*dev = NULL;
struct list_head *list;
int err;
list_for_each(list,&saa7134_devlist) {
h = list_entry(list, struct saa7134_dev, devlist);
if (h->dmasound.minor_dsp == minor)
dev = h;
}
if (NULL == dev)
return -ENODEV;
down(&dev->dmasound.lock);
err = -EBUSY;
if (dev->dmasound.users_dsp)
goto fail1;
dev->dmasound.users_dsp++;
file->private_data = dev;
dev->dmasound.afmt = AFMT_U8;
dev->dmasound.channels = 1;
dev->dmasound.read_count = 0;
dev->dmasound.read_offset = 0;
dsp_buffer_conf(dev,PAGE_SIZE,64);
err = dsp_buffer_init(dev);
if (0 != err)
goto fail2;
up(&dev->dmasound.lock);
return 0;
fail2:
dev->dmasound.users_dsp--;
fail1:
up(&dev->dmasound.lock);
return err;
}
static int dsp_release(struct inode *inode, struct file *file)
{
struct saa7134_dev *dev = file->private_data;
down(&dev->dmasound.lock);
if (dev->dmasound.recording_on)
dsp_rec_stop(dev);
dsp_buffer_free(dev);
dev->dmasound.users_dsp--;
file->private_data = NULL;
up(&dev->dmasound.lock);
return 0;
}
static ssize_t dsp_read(struct file *file, char __user *buffer,
size_t count, loff_t *ppos)
{
struct saa7134_dev *dev = file->private_data;
DECLARE_WAITQUEUE(wait, current);
unsigned int bytes;
unsigned long flags;
int err,ret = 0;
add_wait_queue(&dev->dmasound.wq, &wait);
down(&dev->dmasound.lock);
while (count > 0) {
/* wait for data if needed */
if (0 == dev->dmasound.read_count) {
if (!dev->dmasound.recording_on) {
err = dsp_rec_start(dev);
if (err < 0) {
if (0 == ret)
ret = err;
break;
}
}
if (dev->dmasound.recording_on &&
!dev->dmasound.dma_running) {
/* recover from overruns */
spin_lock_irqsave(&dev->slock,flags);
dsp_dma_start(dev);
spin_unlock_irqrestore(&dev->slock,flags);
}
if (file->f_flags & O_NONBLOCK) {
if (0 == ret)
ret = -EAGAIN;
break;
}
up(&dev->dmasound.lock);
set_current_state(TASK_INTERRUPTIBLE);
if (0 == dev->dmasound.read_count)
schedule();
set_current_state(TASK_RUNNING);
down(&dev->dmasound.lock);
if (signal_pending(current)) {
if (0 == ret)
ret = -EINTR;
break;
}
}
/* copy data to userspace */
bytes = count;
if (bytes > dev->dmasound.read_count)
bytes = dev->dmasound.read_count;
if (bytes > dev->dmasound.bufsize - dev->dmasound.read_offset)
bytes = dev->dmasound.bufsize - dev->dmasound.read_offset;
if (copy_to_user(buffer + ret,
dev->dmasound.dma.vmalloc + dev->dmasound.read_offset,
bytes)) {
if (0 == ret)
ret = -EFAULT;
break;
}
ret += bytes;
count -= bytes;
dev->dmasound.read_count -= bytes;
dev->dmasound.read_offset += bytes;
if (dev->dmasound.read_offset == dev->dmasound.bufsize)
dev->dmasound.read_offset = 0;
}
up(&dev->dmasound.lock);
remove_wait_queue(&dev->dmasound.wq, &wait);
return ret;
}
static ssize_t dsp_write(struct file *file, const char __user *buffer,
size_t count, loff_t *ppos)
{
return -EINVAL;
}
static const char *osspcm_ioctls[] = {
"RESET", "SYNC", "SPEED", "STEREO", "GETBLKSIZE", "SETFMT",
"CHANNELS", "?", "POST", "SUBDIVIDE", "SETFRAGMENT", "GETFMTS",
"GETOSPACE", "GETISPACE", "NONBLOCK", "GETCAPS", "GET/SETTRIGGER",
"GETIPTR", "GETOPTR", "MAPINBUF", "MAPOUTBUF", "SETSYNCRO",
"SETDUPLEX", "GETODELAY"
};
#define OSSPCM_IOCTLS ARRAY_SIZE(osspcm_ioctls)
static void saa7134_oss_print_ioctl(char *name, unsigned int cmd)
{
char *dir;
switch (_IOC_DIR(cmd)) {
case _IOC_NONE: dir = "--"; break;
case _IOC_READ: dir = "r-"; break;
case _IOC_WRITE: dir = "-w"; break;
case _IOC_READ | _IOC_WRITE: dir = "rw"; break;
default: dir = "??"; break;
}
switch (_IOC_TYPE(cmd)) {
case 'P':
printk(KERN_DEBUG "%s: ioctl 0x%08x (oss dsp, %s, SNDCTL_DSP_%s)\n",
name, cmd, dir, (_IOC_NR(cmd) < OSSPCM_IOCTLS) ?
osspcm_ioctls[_IOC_NR(cmd)] : "???");
break;
case 'M':
printk(KERN_DEBUG "%s: ioctl 0x%08x (oss mixer, %s, #%d)\n",
name, cmd, dir, _IOC_NR(cmd));
break;
default:
printk(KERN_DEBUG "%s: ioctl 0x%08x (???, %s, #%d)\n",
name, cmd, dir, _IOC_NR(cmd));
}
}
static int dsp_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg)
{
struct saa7134_dev *dev = file->private_data;
void __user *argp = (void __user *) arg;
int __user *p = argp;
int val = 0;
if (debug > 1)
saa7134_oss_print_ioctl(dev->name,cmd);
switch (cmd) {
case OSS_GETVERSION:
return put_user(SOUND_VERSION, p);
case SNDCTL_DSP_GETCAPS:
return 0;
case SNDCTL_DSP_SPEED:
if (get_user(val, p))
return -EFAULT;
/* fall through */
case SOUND_PCM_READ_RATE:
return put_user(dev->dmasound.rate, p);
case SNDCTL_DSP_STEREO:
if (get_user(val, p))
return -EFAULT;
down(&dev->dmasound.lock);
dev->dmasound.channels = val ? 2 : 1;
if (dev->dmasound.recording_on) {
dsp_rec_stop(dev);
dsp_rec_start(dev);
}
up(&dev->dmasound.lock);
return put_user(dev->dmasound.channels-1, p);
case SNDCTL_DSP_CHANNELS:
if (get_user(val, p))
return -EFAULT;
if (val != 1 && val != 2)
return -EINVAL;
down(&dev->dmasound.lock);
dev->dmasound.channels = val;
if (dev->dmasound.recording_on) {
dsp_rec_stop(dev);
dsp_rec_start(dev);
}
up(&dev->dmasound.lock);
/* fall through */
case SOUND_PCM_READ_CHANNELS:
return put_user(dev->dmasound.channels, p);
case SNDCTL_DSP_GETFMTS: /* Returns a mask */
return put_user(AFMT_U8 | AFMT_S8 |
AFMT_U16_LE | AFMT_U16_BE |
AFMT_S16_LE | AFMT_S16_BE, p);
case SNDCTL_DSP_SETFMT: /* Selects ONE fmt */
if (get_user(val, p))
return -EFAULT;
switch (val) {
case AFMT_QUERY:
/* nothing to do */
break;
case AFMT_U8:
case AFMT_S8:
case AFMT_U16_LE:
case AFMT_U16_BE:
case AFMT_S16_LE:
case AFMT_S16_BE:
down(&dev->dmasound.lock);
dev->dmasound.afmt = val;
if (dev->dmasound.recording_on) {
dsp_rec_stop(dev);
dsp_rec_start(dev);
}
up(&dev->dmasound.lock);
return put_user(dev->dmasound.afmt, p);
default:
return -EINVAL;
}
case SOUND_PCM_READ_BITS:
switch (dev->dmasound.afmt) {
case AFMT_U8:
case AFMT_S8:
return put_user(8, p);
case AFMT_U16_LE:
case AFMT_U16_BE:
case AFMT_S16_LE:
case AFMT_S16_BE:
return put_user(16, p);
default:
return -EINVAL;
}
case SNDCTL_DSP_NONBLOCK:
file->f_flags |= O_NONBLOCK;
return 0;
case SNDCTL_DSP_RESET:
down(&dev->dmasound.lock);
if (dev->dmasound.recording_on)
dsp_rec_stop(dev);
up(&dev->dmasound.lock);
return 0;
case SNDCTL_DSP_GETBLKSIZE:
return put_user(dev->dmasound.blksize, p);
case SNDCTL_DSP_SETFRAGMENT:
if (get_user(val, p))
return -EFAULT;
if (dev->dmasound.recording_on)
return -EBUSY;
dsp_buffer_free(dev);
/* used to be arg >> 16 instead of val >> 16; fixed */
dsp_buffer_conf(dev,1 << (val & 0xffff), (val >> 16) & 0xffff);
dsp_buffer_init(dev);
return 0;
case SNDCTL_DSP_SYNC:
/* NOP */
return 0;
case SNDCTL_DSP_GETISPACE:
{
audio_buf_info info;
info.fragsize = dev->dmasound.blksize;
info.fragstotal = dev->dmasound.blocks;
info.bytes = dev->dmasound.read_count;
info.fragments = info.bytes / info.fragsize;
if (copy_to_user(argp, &info, sizeof(info)))
return -EFAULT;
return 0;
}
default:
return -EINVAL;
}
}
static unsigned int dsp_poll(struct file *file, struct poll_table_struct *wait)
{
struct saa7134_dev *dev = file->private_data;
unsigned int mask = 0;
poll_wait(file, &dev->dmasound.wq, wait);
if (0 == dev->dmasound.read_count) {
down(&dev->dmasound.lock);
if (!dev->dmasound.recording_on)
dsp_rec_start(dev);
up(&dev->dmasound.lock);
} else
mask |= (POLLIN | POLLRDNORM);
return mask;
}
struct file_operations saa7134_dsp_fops = {
.owner = THIS_MODULE,
.open = dsp_open,
.release = dsp_release,
.read = dsp_read,
.write = dsp_write,
.ioctl = dsp_ioctl,
.poll = dsp_poll,
.llseek = no_llseek,
};
/* ------------------------------------------------------------------ */
static int
mixer_recsrc_7134(struct saa7134_dev *dev)
{
int analog_io,rate;
switch (dev->dmasound.input) {
case TV:
saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0xc0);
saa_andorb(SAA7134_SIF_SAMPLE_FREQ, 0x03, 0x00);
break;
case LINE1:
case LINE2:
case LINE2_LEFT:
analog_io = (LINE1 == dev->dmasound.input) ? 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;
}
return 0;
}
static int
mixer_recsrc_7133(struct saa7134_dev *dev)
{
u32 anabar, xbarin;
xbarin = 0x03; // adc
anabar = 0;
switch (dev->dmasound.input) {
case TV:
xbarin = 0; // Demodulator
anabar = 2; // DACs
break;
case LINE1:
anabar = 0; // aux1, aux1
break;
case LINE2:
case LINE2_LEFT:
anabar = 9; // aux2, aux2
break;
}
/* output xbar always main channel */
saa_dsp_writel(dev, 0x46c >> 2, 0xbbbb10);
saa_dsp_writel(dev, 0x464 >> 2, xbarin);
saa_writel(0x594 >> 2, anabar);
return 0;
}
static int
mixer_recsrc(struct saa7134_dev *dev, enum saa7134_audio_in src)
{
static const char *iname[] = { "Oops", "TV", "LINE1", "LINE2" };
dev->dmasound.count++;
dev->dmasound.input = src;
dprintk("mixer input = %s\n",iname[dev->dmasound.input]);
switch (dev->pci->device) {
case PCI_DEVICE_ID_PHILIPS_SAA7134:
mixer_recsrc_7134(dev);
break;
case PCI_DEVICE_ID_PHILIPS_SAA7133:
case PCI_DEVICE_ID_PHILIPS_SAA7135:
mixer_recsrc_7133(dev);
break;
}
return 0;
}
static int
mixer_level(struct saa7134_dev *dev, enum saa7134_audio_in src, int level)
{
switch (dev->pci->device) {
case PCI_DEVICE_ID_PHILIPS_SAA7134:
switch (src) {
case TV:
/* nothing */
break;
case LINE1:
saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x10,
(100 == level) ? 0x00 : 0x10);
break;
case LINE2:
case LINE2_LEFT:
saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x20,
(100 == level) ? 0x00 : 0x20);
break;
}
break;
case PCI_DEVICE_ID_PHILIPS_SAA7133:
case PCI_DEVICE_ID_PHILIPS_SAA7135:
/* nothing */
break;
}
return 0;
}
/* ------------------------------------------------------------------ */
static int mixer_open(struct inode *inode, struct file *file)
{
int minor = iminor(inode);
struct saa7134_dev *h,*dev = NULL;
struct list_head *list;
list_for_each(list,&saa7134_devlist) {
h = list_entry(list, struct saa7134_dev, devlist);
if (h->dmasound.minor_mixer == minor)
dev = h;
}
if (NULL == dev)
return -ENODEV;
file->private_data = dev;
return 0;
}
static int mixer_release(struct inode *inode, struct file *file)
{
file->private_data = NULL;
return 0;
}
static int mixer_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg)
{
struct saa7134_dev *dev = file->private_data;
enum saa7134_audio_in input;
int val,ret;
void __user *argp = (void __user *) arg;
int __user *p = argp;
if (debug > 1)
saa7134_oss_print_ioctl(dev->name,cmd);
switch (cmd) {
case OSS_GETVERSION:
return put_user(SOUND_VERSION, p);
case SOUND_MIXER_INFO:
{
mixer_info info;
memset(&info,0,sizeof(info));
strlcpy(info.id, "TV audio", sizeof(info.id));
strlcpy(info.name, dev->name, sizeof(info.name));
info.modify_counter = dev->dmasound.count;
if (copy_to_user(argp, &info, sizeof(info)))
return -EFAULT;
return 0;
}
case SOUND_OLD_MIXER_INFO:
{
_old_mixer_info info;
memset(&info,0,sizeof(info));
strlcpy(info.id, "TV audio", sizeof(info.id));
strlcpy(info.name, dev->name, sizeof(info.name));
if (copy_to_user(argp, &info, sizeof(info)))
return -EFAULT;
return 0;
}
case MIXER_READ(SOUND_MIXER_CAPS):
return put_user(SOUND_CAP_EXCL_INPUT, p);
case MIXER_READ(SOUND_MIXER_STEREODEVS):
return put_user(0, p);
case MIXER_READ(SOUND_MIXER_RECMASK):
case MIXER_READ(SOUND_MIXER_DEVMASK):
val = SOUND_MASK_LINE1 | SOUND_MASK_LINE2;
if (32000 == dev->dmasound.rate)
val |= SOUND_MASK_VIDEO;
return put_user(val, p);
case MIXER_WRITE(SOUND_MIXER_RECSRC):
if (get_user(val, p))
return -EFAULT;
input = dev->dmasound.input;
if (32000 == dev->dmasound.rate &&
val & SOUND_MASK_VIDEO && dev->dmasound.input != TV)
input = TV;
if (val & SOUND_MASK_LINE1 && dev->dmasound.input != LINE1)
input = LINE1;
if (val & SOUND_MASK_LINE2 && dev->dmasound.input != LINE2)
input = LINE2;
if (input != dev->dmasound.input)
mixer_recsrc(dev,input);
/* fall throuth */
case MIXER_READ(SOUND_MIXER_RECSRC):
switch (dev->dmasound.input) {
case TV: ret = SOUND_MASK_VIDEO; break;
case LINE1: ret = SOUND_MASK_LINE1; break;
case LINE2: ret = SOUND_MASK_LINE2; break;
default: ret = 0;
}
return put_user(ret, p);
case MIXER_WRITE(SOUND_MIXER_VIDEO):
case MIXER_READ(SOUND_MIXER_VIDEO):
if (32000 != dev->dmasound.rate)
return -EINVAL;
return put_user(100 | 100 << 8, p);
case MIXER_WRITE(SOUND_MIXER_LINE1):
if (get_user(val, p))
return -EFAULT;
val &= 0xff;
val = (val <= 50) ? 50 : 100;
dev->dmasound.line1 = val;
mixer_level(dev,LINE1,dev->dmasound.line1);
/* fall throuth */
case MIXER_READ(SOUND_MIXER_LINE1):
return put_user(dev->dmasound.line1 | dev->dmasound.line1 << 8, p);
case MIXER_WRITE(SOUND_MIXER_LINE2):
if (get_user(val, p))
return -EFAULT;
val &= 0xff;
val = (val <= 50) ? 50 : 100;
dev->dmasound.line2 = val;
mixer_level(dev,LINE2,dev->dmasound.line2);
/* fall throuth */
case MIXER_READ(SOUND_MIXER_LINE2):
return put_user(dev->dmasound.line2 | dev->dmasound.line2 << 8, p);
default:
return -EINVAL;
}
}
struct file_operations saa7134_mixer_fops = {
.owner = THIS_MODULE,
.open = mixer_open,
.release = mixer_release,
.ioctl = mixer_ioctl,
.llseek = no_llseek,
};
/* ------------------------------------------------------------------ */
static irqreturn_t saa7134_oss_irq(int irq, void *dev_id, struct pt_regs *regs)
{
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,report);
saa7134_irq_oss_done(dev, status);
} else {
goto out;
}
}
if (loop == 10) {
dprintk("error! looping IRQ!");
}
out:
return IRQ_RETVAL(handled);
}
int saa7134_oss_init1(struct saa7134_dev *dev)
{
if ((request_irq(dev->pci->irq, saa7134_oss_irq,
SA_SHIRQ | SA_INTERRUPT, dev->name,
(void*) &dev->dmasound)) < 0)
return -1;
/* general */
init_MUTEX(&dev->dmasound.lock);
init_waitqueue_head(&dev->dmasound.wq);
switch (dev->pci->device) {
case PCI_DEVICE_ID_PHILIPS_SAA7133:
case PCI_DEVICE_ID_PHILIPS_SAA7135:
saa_writel(0x588 >> 2, 0x00000fff);
saa_writel(0x58c >> 2, 0x00543210);
saa_dsp_writel(dev, 0x46c >> 2, 0xbbbbbb);
break;
}
/* dsp */
dev->dmasound.rate = 32000;
if (rate)
dev->dmasound.rate = rate;
dev->dmasound.rate = (dev->dmasound.rate > 40000) ? 48000 : 32000;
/* mixer */
dev->dmasound.line1 = 50;
dev->dmasound.line2 = 50;
mixer_level(dev,LINE1,dev->dmasound.line1);
mixer_level(dev,LINE2,dev->dmasound.line2);
mixer_recsrc(dev, (dev->dmasound.rate == 32000) ? TV : LINE2);
return 0;
}
int saa7134_oss_fini(struct saa7134_dev *dev)
{
/* nothing */
return 0;
}
void saa7134_irq_oss_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]\n",dev->dmasound.read_count,
dev->dmasound.bufsize);
dsp_dma_stop(dev);
goto done;
}
/* 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\n",
(status & 0x10000000) ? "even" : "odd ", next_blk,
next_blk * dev->dmasound.blksize);
/* update status & wake waiting readers */
dev->dmasound.dma_blk = (dev->dmasound.dma_blk + 1) % dev->dmasound.blocks;
dev->dmasound.read_count += dev->dmasound.blksize;
wake_up(&dev->dmasound.wq);
done:
spin_unlock(&dev->slock);
}
static int saa7134_dsp_create(struct saa7134_dev *dev)
{
int err;
err = dev->dmasound.minor_dsp =
register_sound_dsp(&saa7134_dsp_fops,
dsp_nr[dev->nr]);
if (err < 0) {
goto fail;
}
printk(KERN_INFO "%s: registered device dsp%d\n",
dev->name,dev->dmasound.minor_dsp >> 4);
err = dev->dmasound.minor_mixer =
register_sound_mixer(&saa7134_mixer_fops,
mixer_nr[dev->nr]);
if (err < 0)
goto fail;
printk(KERN_INFO "%s: registered device mixer%d\n",
dev->name,dev->dmasound.minor_mixer >> 4);
return 0;
fail:
unregister_sound_dsp(dev->dmasound.minor_dsp);
return 0;
}
static int oss_device_init(struct saa7134_dev *dev)
{
dev->dmasound.priv_data = dev;
saa7134_oss_init1(dev);
saa7134_dsp_create(dev);
return 1;
}
static int oss_device_exit(struct saa7134_dev *dev)
{
unregister_sound_mixer(dev->dmasound.minor_mixer);
unregister_sound_dsp(dev->dmasound.minor_dsp);
saa7134_oss_fini(dev);
if (dev->pci->irq > 0) {
synchronize_irq(dev->pci->irq);
free_irq(dev->pci->irq,&dev->dmasound);
}
dev->dmasound.priv_data = NULL;
return 1;
}
static int saa7134_oss_init(void)
{
struct saa7134_dev *dev = NULL;
struct list_head *list;
if (!dmasound_init && !dmasound_exit) {
dmasound_init = oss_device_init;
dmasound_exit = oss_device_exit;
} else {
printk(KERN_WARNING "saa7134 OSS: can't load, DMA sound handler already assigned (probably to ALSA)\n");
return -EBUSY;
}
printk(KERN_INFO "saa7134 OSS driver for DMA sound loaded\n");
list_for_each(list,&saa7134_devlist) {
dev = list_entry(list, struct saa7134_dev, devlist);
if (dev->dmasound.priv_data == NULL) {
oss_device_init(dev);
} else {
printk(KERN_ERR "saa7134 OSS: DMA sound is being handled by ALSA, ignoring %s\n",dev->name);
return -EBUSY;
}
}
if (dev == NULL)
printk(KERN_INFO "saa7134 OSS: no saa7134 cards found\n");
return 0;
}
static void saa7134_oss_exit(void)
{
struct saa7134_dev *dev = NULL;
struct list_head *list;
list_for_each(list,&saa7134_devlist) {
dev = list_entry(list, struct saa7134_dev, devlist);
/* Device isn't registered by OSS, probably ALSA's */
if (!dev->dmasound.minor_dsp)
continue;
oss_device_exit(dev);
}
dmasound_init = NULL;
dmasound_exit = NULL;
printk(KERN_INFO "saa7134 OSS driver for DMA sound unloaded\n");
return;
}
/* We initialize this late, to make sure the sound system is up and running */
late_initcall(saa7134_oss_init);
module_exit(saa7134_oss_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
/* ----------------------------------------------------------- */
/*
* Local variables:
* c-basic-offset: 8
* End:
*/