diff options
Diffstat (limited to 'drivers/media/video/saa7134/saa7134-oss.c')
| -rw-r--r-- | drivers/media/video/saa7134/saa7134-oss.c | 857 |
1 files changed, 857 insertions, 0 deletions
diff --git a/drivers/media/video/saa7134/saa7134-oss.c b/drivers/media/video/saa7134/saa7134-oss.c new file mode 100644 index 000000000000..6b6a643bf1cd --- /dev/null +++ b/drivers/media/video/saa7134/saa7134-oss.c @@ -0,0 +1,857 @@ +/* + * $Id: saa7134-oss.c,v 1.13 2004/12/10 12:33:39 kraxel Exp $ + * + * device driver for philips saa7134 based TV cards + * oss dsp interface + * + * (c) 2001,02 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs] + * + * 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/slab.h> +#include <linux/soundcard.h> + +#include "saa7134-reg.h" +#include "saa7134.h" + +/* ------------------------------------------------------------------ */ + +static unsigned int oss_debug = 0; +module_param(oss_debug, int, 0644); +MODULE_PARM_DESC(oss_debug,"enable debug messages [oss]"); + +static unsigned int oss_rate = 0; +module_param(oss_rate, int, 0444); +MODULE_PARM_DESC(oss_rate,"sample rate (valid are: 32000,48000)"); + +#define dprintk(fmt, arg...) if (oss_debug) \ + printk(KERN_DEBUG "%s/oss: " fmt, dev->name , ## arg) + +/* ------------------------------------------------------------------ */ + +static int dsp_buffer_conf(struct saa7134_dev *dev, int blksize, int blocks) +{ + blksize &= ~0xff; + if (blksize < 0x100) + blksize = 0x100; + if (blksize > 0x10000) + blksize = 0x10000; + + if (blocks < 2) + blocks = 2; + while ((blksize * blocks) & ~PAGE_MASK) + blocks++; + 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; +} + +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_SHIFT); + if (0 != err) + return err; + return 0; +} + +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; +} + +static void dsp_dma_start(struct saa7134_dev *dev) +{ + dev->oss.dma_blk = 0; + dev->oss.dma_running = 1; + saa7134_set_dmabits(dev); +} + +static void dsp_dma_stop(struct saa7134_dev *dev) +{ + dev->oss.dma_blk = -1; + dev->oss.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->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; + + /* sample format */ + switch (dev->oss.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->oss.afmt) { + case AFMT_S8: + case AFMT_S16_LE: + case AFMT_S16_BE: sign = 1; break; + default: sign = 0; break; + } + + switch (dev->oss.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->oss.channels) + fmt |= (1 << 3); + if (2 == dev->oss.channels) + fmt |= (3 << 3); + if (sign) + fmt |= 0x04; + fmt |= (TV == dev->oss.input) ? 0xc0 : 0x80; + + saa_writeb(SAA7134_NUM_SAMPLES0, (dev->oss.blksize & 0x0000ff)); + saa_writeb(SAA7134_NUM_SAMPLES1, (dev->oss.blksize & 0x00ff00) >> 8); + saa_writeb(SAA7134_NUM_SAMPLES2, (dev->oss.blksize & 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->oss.channels) + fmt |= (1 << 4); + if (2 == dev->oss.channels) + fmt |= (2 << 4); + if (!sign) + fmt |= 0x04; + saa_writel(0x588 >> 2, dev->oss.blksize -4); + saa_writel(0x58c >> 2, 0x543210 | (fmt << 24)); + break; + } + dprintk("rec_start: afmt=%d ch=%d => fmt=0x%x swap=%c\n", + dev->oss.afmt, dev->oss.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; + 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); + + /* start dma */ + dev->oss.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->oss.pt); + fail1: + videobuf_dma_pci_unmap(dev->pci,&dev->oss.dma); + return err; +} + +static int dsp_rec_stop(struct saa7134_dev *dev) +{ + unsigned long flags; + + dprintk("rec_stop dma_blk=%d\n",dev->oss.dma_blk); + + /* stop dma */ + dev->oss.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->oss.pt); + videobuf_dma_pci_unmap(dev->pci,&dev->oss.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->oss.minor_dsp == minor) + dev = h; + } + if (NULL == dev) + return -ENODEV; + + down(&dev->oss.lock); + err = -EBUSY; + if (dev->oss.users_dsp) + goto fail1; + dev->oss.users_dsp++; + file->private_data = dev; + + dev->oss.afmt = AFMT_U8; + dev->oss.channels = 1; + dev->oss.read_count = 0; + dev->oss.read_offset = 0; + dsp_buffer_conf(dev,PAGE_SIZE,64); + err = dsp_buffer_init(dev); + if (0 != err) + goto fail2; + + up(&dev->oss.lock); + return 0; + + fail2: + dev->oss.users_dsp--; + fail1: + up(&dev->oss.lock); + return err; +} + +static int dsp_release(struct inode *inode, struct file *file) +{ + struct saa7134_dev *dev = file->private_data; + + down(&dev->oss.lock); + if (dev->oss.recording_on) + dsp_rec_stop(dev); + dsp_buffer_free(dev); + dev->oss.users_dsp--; + file->private_data = NULL; + up(&dev->oss.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->oss.wq, &wait); + down(&dev->oss.lock); + while (count > 0) { + /* wait for data if needed */ + if (0 == dev->oss.read_count) { + if (!dev->oss.recording_on) { + err = dsp_rec_start(dev); + if (err < 0) { + if (0 == ret) + ret = err; + break; + } + } + if (dev->oss.recording_on && + !dev->oss.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->oss.lock); + set_current_state(TASK_INTERRUPTIBLE); + if (0 == dev->oss.read_count) + schedule(); + set_current_state(TASK_RUNNING); + down(&dev->oss.lock); + if (signal_pending(current)) { + if (0 == ret) + ret = -EINTR; + break; + } + } + + /* copy data to userspace */ + bytes = count; + if (bytes > dev->oss.read_count) + bytes = dev->oss.read_count; + if (bytes > dev->oss.bufsize - dev->oss.read_offset) + bytes = dev->oss.bufsize - dev->oss.read_offset; + if (copy_to_user(buffer + ret, + dev->oss.dma.vmalloc + dev->oss.read_offset, + bytes)) { + if (0 == ret) + ret = -EFAULT; + break; + } + + ret += bytes; + count -= bytes; + dev->oss.read_count -= bytes; + dev->oss.read_offset += bytes; + if (dev->oss.read_offset == dev->oss.bufsize) + dev->oss.read_offset = 0; + } + up(&dev->oss.lock); + remove_wait_queue(&dev->oss.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 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 (oss_debug > 1) + saa7134_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->oss.rate, p); + + case SNDCTL_DSP_STEREO: + if (get_user(val, p)) + return -EFAULT; + down(&dev->oss.lock); + dev->oss.channels = val ? 2 : 1; + if (dev->oss.recording_on) { + dsp_rec_stop(dev); + dsp_rec_start(dev); + } + up(&dev->oss.lock); + return put_user(dev->oss.channels-1, p); + + case SNDCTL_DSP_CHANNELS: + if (get_user(val, p)) + return -EFAULT; + if (val != 1 && val != 2) + return -EINVAL; + down(&dev->oss.lock); + dev->oss.channels = val; + if (dev->oss.recording_on) { + dsp_rec_stop(dev); + dsp_rec_start(dev); + } + up(&dev->oss.lock); + /* fall through */ + case SOUND_PCM_READ_CHANNELS: + return put_user(dev->oss.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->oss.lock); + dev->oss.afmt = val; + if (dev->oss.recording_on) { + dsp_rec_stop(dev); + dsp_rec_start(dev); + } + up(&dev->oss.lock); + return put_user(dev->oss.afmt, p); + default: + return -EINVAL; + } + + case SOUND_PCM_READ_BITS: + switch (dev->oss.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->oss.lock); + if (dev->oss.recording_on) + dsp_rec_stop(dev); + up(&dev->oss.lock); + return 0; + case SNDCTL_DSP_GETBLKSIZE: + return put_user(dev->oss.blksize, p); + + case SNDCTL_DSP_SETFRAGMENT: + if (get_user(val, p)) + return -EFAULT; + if (dev->oss.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->oss.blksize; + info.fragstotal = dev->oss.blocks; + info.bytes = dev->oss.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->oss.wq, wait); + + if (0 == dev->oss.read_count) { + down(&dev->oss.lock); + if (!dev->oss.recording_on) + dsp_rec_start(dev); + up(&dev->oss.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->oss.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->oss.input) ? 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; + } + return 0; +} + +static int +mixer_recsrc_7133(struct saa7134_dev *dev) +{ + u32 value = 0xbbbbbb; + + switch (dev->oss.input) { + case TV: + value = 0xbbbb10; /* MAIN */ + break; + case LINE1: + value = 0xbbbb32; /* AUX1 */ + break; + case LINE2: + case LINE2_LEFT: + value = 0xbbbb54; /* AUX2 */ + break; + } + saa_dsp_writel(dev, 0x46c >> 2, value); + return 0; +} + +static int +mixer_recsrc(struct saa7134_dev *dev, enum saa7134_audio_in src) +{ + static const char *iname[] = { "Oops", "TV", "LINE1", "LINE2" }; + + dev->oss.count++; + dev->oss.input = src; + dprintk("mixer input = %s\n",iname[dev->oss.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->oss.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 (oss_debug > 1) + saa7134_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->oss.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->oss.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->oss.input; + if (32000 == dev->oss.rate && + val & SOUND_MASK_VIDEO && dev->oss.input != TV) + input = TV; + if (val & SOUND_MASK_LINE1 && dev->oss.input != LINE1) + input = LINE1; + if (val & SOUND_MASK_LINE2 && dev->oss.input != LINE2) + input = LINE2; + if (input != dev->oss.input) + mixer_recsrc(dev,input); + /* fall throuth */ + case MIXER_READ(SOUND_MIXER_RECSRC): + switch (dev->oss.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->oss.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->oss.line1 = val; + mixer_level(dev,LINE1,dev->oss.line1); + /* fall throuth */ + case MIXER_READ(SOUND_MIXER_LINE1): + return put_user(dev->oss.line1 | dev->oss.line1 << 8, p); + + case MIXER_WRITE(SOUND_MIXER_LINE2): + if (get_user(val, p)) + return -EFAULT; + val &= 0xff; + val = (val <= 50) ? 50 : 100; + dev->oss.line2 = val; + mixer_level(dev,LINE2,dev->oss.line2); + /* fall throuth */ + case MIXER_READ(SOUND_MIXER_LINE2): + return put_user(dev->oss.line2 | dev->oss.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, +}; + +/* ------------------------------------------------------------------ */ + +int saa7134_oss_init1(struct saa7134_dev *dev) +{ + /* general */ + init_MUTEX(&dev->oss.lock); + init_waitqueue_head(&dev->oss.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->oss.rate = 32000; + if (oss_rate) + dev->oss.rate = oss_rate; + dev->oss.rate = (dev->oss.rate > 40000) ? 48000 : 32000; + + /* mixer */ + dev->oss.line1 = 50; + dev->oss.line2 = 50; + mixer_level(dev,LINE1,dev->oss.line1); + mixer_level(dev,LINE2,dev->oss.line2); + mixer_recsrc(dev, (dev->oss.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->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 (0 == (dev->oss.dma_blk & 0x00)) + 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]\n",dev->oss.read_count, + dev->oss.bufsize); + dsp_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 (oss_debug > 2) + dprintk("irq: ok, %s, next_blk=%d, addr=%x\n", + (status & 0x10000000) ? "even" : "odd ", next_blk, + next_blk * dev->oss.blksize); + + /* update status & wake waiting readers */ + dev->oss.dma_blk = (dev->oss.dma_blk + 1) % dev->oss.blocks; + dev->oss.read_count += dev->oss.blksize; + wake_up(&dev->oss.wq); + + done: + spin_unlock(&dev->slock); +} + +/* ----------------------------------------------------------- */ +/* + * Local variables: + * c-basic-offset: 8 + * End: + */ |