/* * * 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/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; 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; } 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; } 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_pci_dma_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_pci_dma_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_pci_dma_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 *dev; int err; list_for_each_entry(dev, &saa7134_devlist, devlist) if (dev->dmasound.minor_dsp == minor) goto found; return -ENODEV; found: mutex_lock(&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; mutex_unlock(&dev->dmasound.lock); return 0; fail2: dev->dmasound.users_dsp--; fail1: mutex_unlock(&dev->dmasound.lock); return err; } static int dsp_release(struct inode *inode, struct file *file) { struct saa7134_dev *dev = file->private_data; mutex_lock(&dev->dmasound.lock); if (dev->dmasound.recording_on) dsp_rec_stop(dev); dsp_buffer_free(dev); dev->dmasound.users_dsp--; file->private_data = NULL; mutex_unlock(&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); mutex_lock(&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; } mutex_unlock(&dev->dmasound.lock); set_current_state(TASK_INTERRUPTIBLE); if (0 == dev->dmasound.read_count) schedule(); set_current_state(TASK_RUNNING); mutex_lock(&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; } mutex_unlock(&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; mutex_lock(&dev->dmasound.lock); dev->dmasound.channels = val ? 2 : 1; if (dev->dmasound.recording_on) { dsp_rec_stop(dev); dsp_rec_start(dev); } mutex_unlock(&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; mutex_lock(&dev->dmasound.lock); dev->dmasound.channels = val; if (dev->dmasound.recording_on) { dsp_rec_stop(dev); dsp_rec_start(dev); } mutex_unlock(&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: mutex_lock(&dev->dmasound.lock); dev->dmasound.afmt = val; if (dev->dmasound.recording_on) { dsp_rec_stop(dev); dsp_rec_start(dev); } mutex_unlock(&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: mutex_lock(&dev->dmasound.lock); if (dev->dmasound.recording_on) dsp_rec_stop(dev); mutex_unlock(&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) { mutex_lock(&dev->dmasound.lock); if (!dev->dmasound.recording_on) dsp_rec_start(dev); mutex_unlock(&dev->dmasound.lock); } else mask |= (POLLIN | POLLRDNORM); return mask; } const 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 *dev; list_for_each_entry(dev, &saa7134_devlist, devlist) if (dev->dmasound.minor_mixer == minor) { file->private_data = dev; return 0; } return -ENODEV; } 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; } } const 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 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, IRQF_SHARED | IRQF_DISABLED, dev->name, (void*) &dev->dmasound)) < 0) return -1; /* general */ mutex_init(&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 (!saa7134_dmasound_init && !saa7134_dmasound_exit) { saa7134_dmasound_init = oss_device_init; saa7134_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; list_for_each_entry(dev, &saa7134_devlist, devlist) { /* Device isn't registered by OSS, probably ALSA's */ if (!dev->dmasound.minor_dsp) continue; oss_device_exit(dev); } saa7134_dmasound_init = NULL; saa7134_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: */