| /* |
| * SAA713x ALSA support for V4L |
| * |
| * |
| * 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 <linux/init.h> |
| #include <linux/slab.h> |
| #include <linux/time.h> |
| #include <linux/wait.h> |
| #include <linux/moduleparam.h> |
| #include <linux/module.h> |
| #include <sound/driver.h> |
| #include <sound/core.h> |
| #include <sound/control.h> |
| #include <sound/pcm.h> |
| #include <sound/pcm_params.h> |
| #include <sound/initval.h> |
| #include <linux/interrupt.h> |
| |
| #include "saa7134.h" |
| #include "saa7134-reg.h" |
| |
| static unsigned int debug = 0; |
| module_param(debug, int, 0644); |
| MODULE_PARM_DESC(debug,"enable debug messages [alsa]"); |
| |
| /* |
| * Configuration macros |
| */ |
| |
| /* defaults */ |
| #define MIXER_ADDR_TVTUNER 0 |
| #define MIXER_ADDR_LINE1 1 |
| #define MIXER_ADDR_LINE2 2 |
| #define MIXER_ADDR_LAST 2 |
| |
| |
| static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ |
| static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ |
| static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 1}; |
| |
| module_param_array(index, int, NULL, 0444); |
| module_param_array(enable, int, NULL, 0444); |
| MODULE_PARM_DESC(index, "Index value for SAA7134 capture interface(s)."); |
| MODULE_PARM_DESC(enable, "Enable (or not) the SAA7134 capture interface(s)."); |
| |
| #define dprintk(fmt, arg...) if (debug) \ |
| printk(KERN_DEBUG "%s/alsa: " fmt, dev->name , ##arg) |
| |
| |
| |
| /* |
| * Main chip structure |
| */ |
| |
| typedef struct snd_card_saa7134 { |
| struct snd_card *card; |
| spinlock_t mixer_lock; |
| int mixer_volume[MIXER_ADDR_LAST+1][2]; |
| int capture_source[MIXER_ADDR_LAST+1][2]; |
| struct pci_dev *pci; |
| struct saa7134_dev *dev; |
| |
| unsigned long iobase; |
| int irq; |
| |
| spinlock_t lock; |
| } snd_card_saa7134_t; |
| |
| |
| |
| /* |
| * PCM structure |
| */ |
| |
| typedef struct snd_card_saa7134_pcm { |
| struct saa7134_dev *dev; |
| |
| spinlock_t lock; |
| |
| struct snd_pcm_substream *substream; |
| } snd_card_saa7134_pcm_t; |
| |
| static struct snd_card *snd_saa7134_cards[SNDRV_CARDS]; |
| |
| |
| /* |
| * saa7134 DMA audio stop |
| * |
| * Called when the capture device is released or the buffer overflows |
| * |
| * - Copied verbatim from saa7134-oss's dsp_dma_stop. |
| * |
| */ |
| |
| static void saa7134_dma_stop(struct saa7134_dev *dev) |
| { |
| dev->dmasound.dma_blk = -1; |
| dev->dmasound.dma_running = 0; |
| saa7134_set_dmabits(dev); |
| } |
| |
| /* |
| * saa7134 DMA audio start |
| * |
| * Called when preparing the capture device for use |
| * |
| * - Copied verbatim from saa7134-oss's dsp_dma_start. |
| * |
| */ |
| |
| static void saa7134_dma_start(struct saa7134_dev *dev) |
| { |
| dev->dmasound.dma_blk = 0; |
| dev->dmasound.dma_running = 1; |
| saa7134_set_dmabits(dev); |
| } |
| |
| /* |
| * saa7134 audio DMA IRQ handler |
| * |
| * Called whenever we get an SAA7134_IRQ_REPORT_DONE_RA3 interrupt |
| * Handles shifting between the 2 buffers, manages the read counters, |
| * and notifies ALSA when periods elapse |
| * |
| * - Mostly copied from saa7134-oss's saa7134_irq_oss_done. |
| * |
| */ |
| |
| static void saa7134_irq_alsa_done(struct saa7134_dev *dev, |
| unsigned long status) |
| { |
| int next_blk, reg = 0; |
| |
| spin_lock(&dev->slock); |
| if (UNSET == dev->dmasound.dma_blk) { |
| dprintk("irq: recording stopped\n"); |
| goto done; |
| } |
| if (0 != (status & 0x0f000000)) |
| dprintk("irq: lost %ld\n", (status >> 24) & 0x0f); |
| if (0 == (status & 0x10000000)) { |
| /* odd */ |
| if (0 == (dev->dmasound.dma_blk & 0x01)) |
| reg = SAA7134_RS_BA1(6); |
| } else { |
| /* even */ |
| if (1 == (dev->dmasound.dma_blk & 0x01)) |
| reg = SAA7134_RS_BA2(6); |
| } |
| if (0 == reg) { |
| dprintk("irq: field oops [%s]\n", |
| (status & 0x10000000) ? "even" : "odd"); |
| goto done; |
| } |
| |
| if (dev->dmasound.read_count >= dev->dmasound.blksize * (dev->dmasound.blocks-2)) { |
| dprintk("irq: overrun [full=%d/%d] - Blocks in %d\n",dev->dmasound.read_count, |
| dev->dmasound.bufsize, dev->dmasound.blocks); |
| spin_unlock(&dev->slock); |
| snd_pcm_stop(dev->dmasound.substream,SNDRV_PCM_STATE_XRUN); |
| return; |
| } |
| |
| /* next block addr */ |
| next_blk = (dev->dmasound.dma_blk + 2) % dev->dmasound.blocks; |
| saa_writel(reg,next_blk * dev->dmasound.blksize); |
| if (debug > 2) |
| dprintk("irq: ok, %s, next_blk=%d, addr=%x, blocks=%u, size=%u, read=%u\n", |
| (status & 0x10000000) ? "even" : "odd ", next_blk, |
| next_blk * dev->dmasound.blksize, dev->dmasound.blocks, dev->dmasound.blksize, dev->dmasound.read_count); |
| |
| /* update status & wake waiting readers */ |
| dev->dmasound.dma_blk = (dev->dmasound.dma_blk + 1) % dev->dmasound.blocks; |
| dev->dmasound.read_count += dev->dmasound.blksize; |
| |
| dev->dmasound.recording_on = reg; |
| |
| if (dev->dmasound.read_count >= snd_pcm_lib_period_bytes(dev->dmasound.substream)) { |
| spin_unlock(&dev->slock); |
| snd_pcm_period_elapsed(dev->dmasound.substream); |
| spin_lock(&dev->slock); |
| } |
| |
| done: |
| spin_unlock(&dev->slock); |
| |
| } |
| |
| /* |
| * IRQ request handler |
| * |
| * Runs along with saa7134's IRQ handler, discards anything that isn't |
| * DMA sound |
| * |
| */ |
| |
| static irqreturn_t saa7134_alsa_irq(int irq, void *dev_id, struct 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_alsa_done(dev, status); |
| } else { |
| goto out; |
| } |
| } |
| |
| if (loop == 10) { |
| dprintk("error! looping IRQ!"); |
| } |
| |
| out: |
| return IRQ_RETVAL(handled); |
| } |
| |
| /* |
| * ALSA capture trigger |
| * |
| * - One of the ALSA capture callbacks. |
| * |
| * Called whenever a capture is started or stopped. Must be defined, |
| * but there's nothing we want to do here |
| * |
| */ |
| |
| static int snd_card_saa7134_capture_trigger(struct snd_pcm_substream * substream, |
| int cmd) |
| { |
| struct snd_pcm_runtime *runtime = substream->runtime; |
| snd_card_saa7134_pcm_t *pcm = runtime->private_data; |
| struct saa7134_dev *dev=pcm->dev; |
| int err = 0; |
| |
| spin_lock(&dev->slock); |
| if (cmd == SNDRV_PCM_TRIGGER_START) { |
| /* start dma */ |
| saa7134_dma_start(dev); |
| } else if (cmd == SNDRV_PCM_TRIGGER_STOP) { |
| /* stop dma */ |
| saa7134_dma_stop(dev); |
| } else { |
| err = -EINVAL; |
| } |
| spin_unlock(&dev->slock); |
| |
| return err; |
| } |
| |
| /* |
| * DMA buffer initialization |
| * |
| * Uses V4L functions to initialize the DMA. Shouldn't be necessary in |
| * ALSA, but I was unable to use ALSA's own DMA, and had to force the |
| * usage of V4L's |
| * |
| * - Copied verbatim from saa7134-oss. |
| * |
| */ |
| |
| static int dsp_buffer_init(struct saa7134_dev *dev) |
| { |
| int err; |
| |
| BUG_ON(!dev->dmasound.bufsize); |
| |
| videobuf_dma_init(&dev->dmasound.dma); |
| err = videobuf_dma_init_kernel(&dev->dmasound.dma, PCI_DMA_FROMDEVICE, |
| (dev->dmasound.bufsize + PAGE_SIZE) >> PAGE_SHIFT); |
| if (0 != err) |
| return err; |
| return 0; |
| } |
| |
| /* |
| * DMA buffer release |
| * |
| * Called after closing the device, during snd_card_saa7134_capture_close |
| * |
| */ |
| |
| static int dsp_buffer_free(struct saa7134_dev *dev) |
| { |
| BUG_ON(!dev->dmasound.blksize); |
| |
| videobuf_dma_free(&dev->dmasound.dma); |
| |
| dev->dmasound.blocks = 0; |
| dev->dmasound.blksize = 0; |
| dev->dmasound.bufsize = 0; |
| |
| return 0; |
| } |
| |
| |
| /* |
| * ALSA PCM preparation |
| * |
| * - One of the ALSA capture callbacks. |
| * |
| * Called right after the capture device is opened, this function configures |
| * the buffer using the previously defined functions, allocates the memory, |
| * sets up the hardware registers, and then starts the DMA. When this function |
| * returns, the audio should be flowing. |
| * |
| */ |
| |
| static int snd_card_saa7134_capture_prepare(struct snd_pcm_substream * substream) |
| { |
| struct snd_pcm_runtime *runtime = substream->runtime; |
| int bswap, sign; |
| u32 fmt, control; |
| snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream); |
| struct saa7134_dev *dev; |
| snd_card_saa7134_pcm_t *pcm = runtime->private_data; |
| |
| pcm->dev->dmasound.substream = substream; |
| |
| dev = saa7134->dev; |
| |
| if (snd_pcm_format_width(runtime->format) == 8) |
| fmt = 0x00; |
| else |
| fmt = 0x01; |
| |
| if (snd_pcm_format_signed(runtime->format)) |
| sign = 1; |
| else |
| sign = 0; |
| |
| if (snd_pcm_format_big_endian(runtime->format)) |
| bswap = 1; |
| else |
| bswap = 0; |
| |
| switch (dev->pci->device) { |
| case PCI_DEVICE_ID_PHILIPS_SAA7134: |
| if (1 == runtime->channels) |
| fmt |= (1 << 3); |
| if (2 == runtime->channels) |
| fmt |= (3 << 3); |
| if (sign) |
| fmt |= 0x04; |
| |
| fmt |= (MIXER_ADDR_TVTUNER == dev->dmasound.input) ? 0xc0 : 0x80; |
| saa_writeb(SAA7134_NUM_SAMPLES0, ((dev->dmasound.blksize - 1) & 0x0000ff)); |
| saa_writeb(SAA7134_NUM_SAMPLES1, ((dev->dmasound.blksize - 1) & 0x00ff00) >> 8); |
| saa_writeb(SAA7134_NUM_SAMPLES2, ((dev->dmasound.blksize - 1) & 0xff0000) >> 16); |
| saa_writeb(SAA7134_AUDIO_FORMAT_CTRL, fmt); |
| |
| break; |
| case PCI_DEVICE_ID_PHILIPS_SAA7133: |
| case PCI_DEVICE_ID_PHILIPS_SAA7135: |
| if (1 == runtime->channels) |
| fmt |= (1 << 4); |
| if (2 == runtime->channels) |
| fmt |= (2 << 4); |
| if (!sign) |
| fmt |= 0x04; |
| saa_writel(SAA7133_NUM_SAMPLES, dev->dmasound.blksize -1); |
| saa_writel(SAA7133_AUDIO_CHANNEL, 0x543210 | (fmt << 24)); |
| break; |
| } |
| |
| dprintk("rec_start: afmt=%d ch=%d => fmt=0x%x swap=%c\n", |
| runtime->format, runtime->channels, fmt, |
| bswap ? 'b' : '-'); |
| /* dma: setup channel 6 (= AUDIO) */ |
| control = SAA7134_RS_CONTROL_BURST_16 | |
| SAA7134_RS_CONTROL_ME | |
| (dev->dmasound.pt.dma >> 12); |
| if (bswap) |
| control |= SAA7134_RS_CONTROL_BSWAP; |
| |
| saa_writel(SAA7134_RS_BA1(6),0); |
| saa_writel(SAA7134_RS_BA2(6),dev->dmasound.blksize); |
| saa_writel(SAA7134_RS_PITCH(6),0); |
| saa_writel(SAA7134_RS_CONTROL(6),control); |
| |
| dev->dmasound.rate = runtime->rate; |
| |
| return 0; |
| |
| } |
| |
| /* |
| * ALSA pointer fetching |
| * |
| * - One of the ALSA capture callbacks. |
| * |
| * Called whenever a period elapses, it must return the current hardware |
| * position of the buffer. |
| * Also resets the read counter used to prevent overruns |
| * |
| */ |
| |
| static snd_pcm_uframes_t |
| snd_card_saa7134_capture_pointer(struct snd_pcm_substream * substream) |
| { |
| struct snd_pcm_runtime *runtime = substream->runtime; |
| snd_card_saa7134_pcm_t *pcm = runtime->private_data; |
| struct saa7134_dev *dev=pcm->dev; |
| |
| if (dev->dmasound.read_count) { |
| dev->dmasound.read_count -= snd_pcm_lib_period_bytes(substream); |
| dev->dmasound.read_offset += snd_pcm_lib_period_bytes(substream); |
| if (dev->dmasound.read_offset == dev->dmasound.bufsize) |
| dev->dmasound.read_offset = 0; |
| } |
| |
| return bytes_to_frames(runtime, dev->dmasound.read_offset); |
| } |
| |
| /* |
| * ALSA hardware capabilities definition |
| */ |
| |
| static struct snd_pcm_hardware snd_card_saa7134_capture = |
| { |
| .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | |
| SNDRV_PCM_INFO_BLOCK_TRANSFER | |
| SNDRV_PCM_INFO_MMAP_VALID), |
| .formats = SNDRV_PCM_FMTBIT_S16_LE | \ |
| SNDRV_PCM_FMTBIT_S16_BE | \ |
| SNDRV_PCM_FMTBIT_S8 | \ |
| SNDRV_PCM_FMTBIT_U8 | \ |
| SNDRV_PCM_FMTBIT_U16_LE | \ |
| SNDRV_PCM_FMTBIT_U16_BE, |
| .rates = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_48000, |
| .rate_min = 32000, |
| .rate_max = 48000, |
| .channels_min = 1, |
| .channels_max = 2, |
| .buffer_bytes_max = (256*1024), |
| .period_bytes_min = 64, |
| .period_bytes_max = (256*1024), |
| .periods_min = 2, |
| .periods_max = 1024, |
| }; |
| |
| static void snd_card_saa7134_runtime_free(struct snd_pcm_runtime *runtime) |
| { |
| snd_card_saa7134_pcm_t *pcm = runtime->private_data; |
| |
| kfree(pcm); |
| } |
| |
| |
| /* |
| * ALSA hardware params |
| * |
| * - One of the ALSA capture callbacks. |
| * |
| * Called on initialization, right before the PCM preparation |
| * |
| */ |
| |
| static int snd_card_saa7134_hw_params(struct snd_pcm_substream * substream, |
| struct snd_pcm_hw_params * hw_params) |
| { |
| snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream); |
| struct saa7134_dev *dev; |
| unsigned int period_size, periods; |
| int err; |
| |
| period_size = params_period_bytes(hw_params); |
| periods = params_periods(hw_params); |
| |
| snd_assert(period_size >= 0x100 && period_size <= 0x10000, |
| return -EINVAL); |
| snd_assert(periods >= 2, return -EINVAL); |
| snd_assert(period_size * periods <= 1024 * 1024, return -EINVAL); |
| |
| dev = saa7134->dev; |
| |
| if (dev->dmasound.blocks == periods && |
| dev->dmasound.blksize == period_size) |
| return 0; |
| |
| /* release the old buffer */ |
| if (substream->runtime->dma_area) { |
| saa7134_pgtable_free(dev->pci, &dev->dmasound.pt); |
| videobuf_pci_dma_unmap(dev->pci, &dev->dmasound.dma); |
| dsp_buffer_free(dev); |
| substream->runtime->dma_area = NULL; |
| } |
| dev->dmasound.blocks = periods; |
| dev->dmasound.blksize = period_size; |
| dev->dmasound.bufsize = period_size * periods; |
| |
| err = dsp_buffer_init(dev); |
| if (0 != err) { |
| dev->dmasound.blocks = 0; |
| dev->dmasound.blksize = 0; |
| dev->dmasound.bufsize = 0; |
| return err; |
| } |
| |
| if (0 != (err = videobuf_pci_dma_map(dev->pci, &dev->dmasound.dma))) { |
| dsp_buffer_free(dev); |
| return err; |
| } |
| if (0 != (err = saa7134_pgtable_alloc(dev->pci,&dev->dmasound.pt))) { |
| videobuf_pci_dma_unmap(dev->pci, &dev->dmasound.dma); |
| dsp_buffer_free(dev); |
| return err; |
| } |
| if (0 != (err = saa7134_pgtable_build(dev->pci,&dev->dmasound.pt, |
| dev->dmasound.dma.sglist, |
| dev->dmasound.dma.sglen, |
| 0))) { |
| saa7134_pgtable_free(dev->pci, &dev->dmasound.pt); |
| videobuf_pci_dma_unmap(dev->pci, &dev->dmasound.dma); |
| dsp_buffer_free(dev); |
| return err; |
| } |
| |
| /* I should be able to use runtime->dma_addr in the control |
| byte, but it doesn't work. So I allocate the DMA using the |
| V4L functions, and force ALSA to use that as the DMA area */ |
| |
| substream->runtime->dma_area = dev->dmasound.dma.vmalloc; |
| |
| return 1; |
| |
| } |
| |
| /* |
| * ALSA hardware release |
| * |
| * - One of the ALSA capture callbacks. |
| * |
| * Called after closing the device, but before snd_card_saa7134_capture_close |
| * It stops the DMA audio and releases the buffers. |
| * |
| */ |
| |
| static int snd_card_saa7134_hw_free(struct snd_pcm_substream * substream) |
| { |
| snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream); |
| struct saa7134_dev *dev; |
| |
| dev = saa7134->dev; |
| |
| if (substream->runtime->dma_area) { |
| saa7134_pgtable_free(dev->pci, &dev->dmasound.pt); |
| videobuf_pci_dma_unmap(dev->pci, &dev->dmasound.dma); |
| dsp_buffer_free(dev); |
| substream->runtime->dma_area = NULL; |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * ALSA capture finish |
| * |
| * - One of the ALSA capture callbacks. |
| * |
| * Called after closing the device. |
| * |
| */ |
| |
| static int snd_card_saa7134_capture_close(struct snd_pcm_substream * substream) |
| { |
| return 0; |
| } |
| |
| /* |
| * ALSA capture start |
| * |
| * - One of the ALSA capture callbacks. |
| * |
| * Called when opening the device. It creates and populates the PCM |
| * structure |
| * |
| */ |
| |
| static int snd_card_saa7134_capture_open(struct snd_pcm_substream * substream) |
| { |
| struct snd_pcm_runtime *runtime = substream->runtime; |
| snd_card_saa7134_pcm_t *pcm; |
| snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream); |
| struct saa7134_dev *dev = saa7134->dev; |
| int err; |
| |
| mutex_lock(&dev->dmasound.lock); |
| |
| dev->dmasound.read_count = 0; |
| dev->dmasound.read_offset = 0; |
| |
| mutex_unlock(&dev->dmasound.lock); |
| |
| pcm = kzalloc(sizeof(*pcm), GFP_KERNEL); |
| if (pcm == NULL) |
| return -ENOMEM; |
| |
| pcm->dev=saa7134->dev; |
| |
| spin_lock_init(&pcm->lock); |
| |
| pcm->substream = substream; |
| runtime->private_data = pcm; |
| runtime->private_free = snd_card_saa7134_runtime_free; |
| runtime->hw = snd_card_saa7134_capture; |
| |
| if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0) |
| return err; |
| |
| return 0; |
| } |
| |
| /* |
| * ALSA capture callbacks definition |
| */ |
| |
| static struct snd_pcm_ops snd_card_saa7134_capture_ops = { |
| .open = snd_card_saa7134_capture_open, |
| .close = snd_card_saa7134_capture_close, |
| .ioctl = snd_pcm_lib_ioctl, |
| .hw_params = snd_card_saa7134_hw_params, |
| .hw_free = snd_card_saa7134_hw_free, |
| .prepare = snd_card_saa7134_capture_prepare, |
| .trigger = snd_card_saa7134_capture_trigger, |
| .pointer = snd_card_saa7134_capture_pointer, |
| }; |
| |
| /* |
| * ALSA PCM setup |
| * |
| * Called when initializing the board. Sets up the name and hooks up |
| * the callbacks |
| * |
| */ |
| |
| static int snd_card_saa7134_pcm(snd_card_saa7134_t *saa7134, int device) |
| { |
| struct snd_pcm *pcm; |
| int err; |
| |
| if ((err = snd_pcm_new(saa7134->card, "SAA7134 PCM", device, 0, 1, &pcm)) < 0) |
| return err; |
| snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_card_saa7134_capture_ops); |
| pcm->private_data = saa7134; |
| pcm->info_flags = 0; |
| strcpy(pcm->name, "SAA7134 PCM"); |
| return 0; |
| } |
| |
| #define SAA713x_VOLUME(xname, xindex, addr) \ |
| { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \ |
| .info = snd_saa7134_volume_info, \ |
| .get = snd_saa7134_volume_get, .put = snd_saa7134_volume_put, \ |
| .private_value = addr } |
| |
| static int snd_saa7134_volume_info(struct snd_kcontrol * kcontrol, |
| struct snd_ctl_elem_info * uinfo) |
| { |
| uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
| uinfo->count = 2; |
| uinfo->value.integer.min = 0; |
| uinfo->value.integer.max = 20; |
| return 0; |
| } |
| |
| static int snd_saa7134_volume_get(struct snd_kcontrol * kcontrol, |
| struct snd_ctl_elem_value * ucontrol) |
| { |
| snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol); |
| int addr = kcontrol->private_value; |
| |
| ucontrol->value.integer.value[0] = chip->mixer_volume[addr][0]; |
| ucontrol->value.integer.value[1] = chip->mixer_volume[addr][1]; |
| return 0; |
| } |
| |
| static int snd_saa7134_volume_put(struct snd_kcontrol * kcontrol, |
| struct snd_ctl_elem_value * ucontrol) |
| { |
| snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol); |
| int change, addr = kcontrol->private_value; |
| int left, right; |
| |
| left = ucontrol->value.integer.value[0]; |
| if (left < 0) |
| left = 0; |
| if (left > 20) |
| left = 20; |
| right = ucontrol->value.integer.value[1]; |
| if (right < 0) |
| right = 0; |
| if (right > 20) |
| right = 20; |
| spin_lock_irq(&chip->mixer_lock); |
| change = 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_irq(&chip->mixer_lock); |
| return change; |
| } |
| |
| #define SAA713x_CAPSRC(xname, xindex, addr) \ |
| { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \ |
| .info = snd_saa7134_capsrc_info, \ |
| .get = snd_saa7134_capsrc_get, .put = snd_saa7134_capsrc_put, \ |
| .private_value = addr } |
| |
| static int snd_saa7134_capsrc_info(struct snd_kcontrol * kcontrol, |
| struct snd_ctl_elem_info * uinfo) |
| { |
| uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; |
| uinfo->count = 2; |
| uinfo->value.integer.min = 0; |
| uinfo->value.integer.max = 1; |
| return 0; |
| } |
| |
| static int snd_saa7134_capsrc_get(struct snd_kcontrol * kcontrol, |
| struct snd_ctl_elem_value * ucontrol) |
| { |
| snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol); |
| int addr = kcontrol->private_value; |
| |
| spin_lock_irq(&chip->mixer_lock); |
| ucontrol->value.integer.value[0] = chip->capture_source[addr][0]; |
| ucontrol->value.integer.value[1] = chip->capture_source[addr][1]; |
| spin_unlock_irq(&chip->mixer_lock); |
| |
| return 0; |
| } |
| |
| static int snd_saa7134_capsrc_put(struct snd_kcontrol * kcontrol, |
| struct snd_ctl_elem_value * ucontrol) |
| { |
| snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol); |
| int change, addr = kcontrol->private_value; |
| int left, right; |
| u32 anabar, xbarin; |
| int analog_io, rate; |
| struct saa7134_dev *dev; |
| |
| dev = chip->dev; |
| |
| left = ucontrol->value.integer.value[0] & 1; |
| right = ucontrol->value.integer.value[1] & 1; |
| spin_lock_irq(&chip->mixer_lock); |
| |
| 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->dmasound.input=addr; |
| spin_unlock_irq(&chip->mixer_lock); |
| |
| |
| if (change) { |
| switch (dev->pci->device) { |
| |
| case PCI_DEVICE_ID_PHILIPS_SAA7134: |
| switch (addr) { |
| case MIXER_ADDR_TVTUNER: |
| saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0xc0); |
| saa_andorb(SAA7134_SIF_SAMPLE_FREQ, 0x03, 0x00); |
| break; |
| case MIXER_ADDR_LINE1: |
| case MIXER_ADDR_LINE2: |
| analog_io = (MIXER_ADDR_LINE1 == addr) ? 0x00 : 0x08; |
| rate = (32000 == dev->dmasound.rate) ? 0x01 : 0x03; |
| saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x08, analog_io); |
| saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0x80); |
| saa_andorb(SAA7134_SIF_SAMPLE_FREQ, 0x03, rate); |
| break; |
| } |
| |
| break; |
| case PCI_DEVICE_ID_PHILIPS_SAA7133: |
| case PCI_DEVICE_ID_PHILIPS_SAA7135: |
| xbarin = 0x03; // adc |
| anabar = 0; |
| switch (addr) { |
| case MIXER_ADDR_TVTUNER: |
| xbarin = 0; // Demodulator |
| anabar = 2; // DACs |
| break; |
| case MIXER_ADDR_LINE1: |
| anabar = 0; // aux1, aux1 |
| break; |
| case MIXER_ADDR_LINE2: |
| anabar = 9; // aux2, aux2 |
| break; |
| } |
| |
| /* output xbar always main channel */ |
| saa_dsp_writel(dev, SAA7133_DIGITAL_OUTPUT_SEL1, 0xbbbb10); |
| |
| if (left || right) { // We've got data, turn the input on |
| saa_dsp_writel(dev, SAA7133_DIGITAL_INPUT_XBAR1, xbarin); |
| saa_writel(SAA7133_ANALOG_IO_SELECT, anabar); |
| } else { |
| saa_dsp_writel(dev, SAA7133_DIGITAL_INPUT_XBAR1, 0); |
| saa_writel(SAA7133_ANALOG_IO_SELECT, 0); |
| } |
| break; |
| } |
| } |
| |
| return change; |
| } |
| |
| static struct snd_kcontrol_new 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) |
| { |
| struct snd_card *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 void snd_saa7134_free(struct snd_card * card) |
| { |
| snd_card_saa7134_t *chip = card->private_data; |
| |
| if (chip->dev->dmasound.priv_data == NULL) |
| return; |
| |
| if (chip->irq >= 0) { |
| synchronize_irq(chip->irq); |
| free_irq(chip->irq, &chip->dev->dmasound); |
| } |
| |
| chip->dev->dmasound.priv_data = NULL; |
| |
| } |
| |
| /* |
| * ALSA initialization |
| * |
| * Called by the init routine, once for each saa7134 device present, |
| * it creates the basic structures and registers the ALSA devices |
| * |
| */ |
| |
| static int alsa_card_saa7134_create(struct saa7134_dev *dev, int devnum) |
| { |
| |
| struct snd_card *card; |
| snd_card_saa7134_t *chip; |
| int err; |
| |
| |
| if (devnum >= SNDRV_CARDS) |
| return -ENODEV; |
| if (!enable[devnum]) |
| return -ENODEV; |
| |
| card = snd_card_new(index[devnum], id[devnum], THIS_MODULE, sizeof(snd_card_saa7134_t)); |
| |
| if (card == NULL) |
| return -ENOMEM; |
| |
| strcpy(card->driver, "SAA7134"); |
| |
| /* Card "creation" */ |
| |
| card->private_free = snd_saa7134_free; |
| chip = (snd_card_saa7134_t *) card->private_data; |
| |
| spin_lock_init(&chip->lock); |
| spin_lock_init(&chip->mixer_lock); |
| |
| chip->dev = dev; |
| |
| chip->card = card; |
| |
| chip->pci = dev->pci; |
| chip->iobase = pci_resource_start(dev->pci, 0); |
| |
| |
| err = request_irq(dev->pci->irq, saa7134_alsa_irq, |
| IRQF_SHARED | IRQF_DISABLED, dev->name, |
| (void*) &dev->dmasound); |
| |
| if (err < 0) { |
| printk(KERN_ERR "%s: can't get IRQ %d for ALSA\n", |
| dev->name, dev->pci->irq); |
| goto __nodev; |
| } |
| |
| chip->irq = dev->pci->irq; |
| |
| mutex_init(&dev->dmasound.lock); |
| |
| if ((err = snd_card_saa7134_new_mixer(chip)) < 0) |
| goto __nodev; |
| |
| if ((err = snd_card_saa7134_pcm(chip, 0)) < 0) |
| goto __nodev; |
| |
| snd_card_set_dev(card, &chip->pci->dev); |
| |
| /* End of "creation" */ |
| |
| strcpy(card->shortname, "SAA7134"); |
| sprintf(card->longname, "%s at 0x%lx irq %d", |
| chip->dev->name, chip->iobase, chip->irq); |
| |
| printk(KERN_INFO "%s/alsa: %s registered as card %d\n",dev->name,card->longname,index[devnum]); |
| |
| if ((err = snd_card_register(card)) == 0) { |
| snd_saa7134_cards[devnum] = card; |
| return 0; |
| } |
| |
| __nodev: |
| snd_card_free(card); |
| return err; |
| } |
| |
| |
| static int alsa_device_init(struct saa7134_dev *dev) |
| { |
| dev->dmasound.priv_data = dev; |
| alsa_card_saa7134_create(dev,dev->nr); |
| return 1; |
| } |
| |
| static int alsa_device_exit(struct saa7134_dev *dev) |
| { |
| |
| snd_card_free(snd_saa7134_cards[dev->nr]); |
| snd_saa7134_cards[dev->nr] = NULL; |
| return 1; |
| } |
| |
| /* |
| * Module initializer |
| * |
| * Loops through present saa7134 cards, and assigns an ALSA device |
| * to each one |
| * |
| */ |
| |
| static int saa7134_alsa_init(void) |
| { |
| struct saa7134_dev *dev = NULL; |
| struct list_head *list; |
| |
| if (!saa7134_dmasound_init && !saa7134_dmasound_exit) { |
| saa7134_dmasound_init = alsa_device_init; |
| saa7134_dmasound_exit = alsa_device_exit; |
| } else { |
| printk(KERN_WARNING "saa7134 ALSA: can't load, DMA sound handler already assigned (probably to OSS)\n"); |
| return -EBUSY; |
| } |
| |
| printk(KERN_INFO "saa7134 ALSA driver for DMA sound loaded\n"); |
| |
| list_for_each(list,&saa7134_devlist) { |
| dev = list_entry(list, struct saa7134_dev, devlist); |
| if (dev->dmasound.priv_data == NULL) { |
| alsa_device_init(dev); |
| } else { |
| printk(KERN_ERR "saa7134 ALSA: DMA sound is being handled by OSS. ignoring %s\n",dev->name); |
| return -EBUSY; |
| } |
| } |
| |
| if (dev == NULL) |
| printk(KERN_INFO "saa7134 ALSA: no saa7134 cards found\n"); |
| |
| return 0; |
| |
| } |
| |
| /* |
| * Module destructor |
| */ |
| |
| static void saa7134_alsa_exit(void) |
| { |
| int idx; |
| |
| for (idx = 0; idx < SNDRV_CARDS; idx++) { |
| snd_card_free(snd_saa7134_cards[idx]); |
| } |
| |
| saa7134_dmasound_init = NULL; |
| saa7134_dmasound_exit = NULL; |
| printk(KERN_INFO "saa7134 ALSA driver for DMA sound unloaded\n"); |
| |
| return; |
| } |
| |
| /* We initialize this late, to make sure the sound system is up and running */ |
| late_initcall(saa7134_alsa_init); |
| module_exit(saa7134_alsa_exit); |
| MODULE_LICENSE("GPL"); |
| MODULE_AUTHOR("Ricardo Cerqueira"); |
| |
| |
| |