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