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Diffstat (limited to 'drivers/media/video/saa7134/saa7134-alsa.c')
-rw-r--r--drivers/media/video/saa7134/saa7134-alsa.c1029
1 files changed, 1029 insertions, 0 deletions
diff --git a/drivers/media/video/saa7134/saa7134-alsa.c b/drivers/media/video/saa7134/saa7134-alsa.c
new file mode 100644
index 00000000000..263c6e2e3e8
--- /dev/null
+++ b/drivers/media/video/saa7134/saa7134-alsa.c
@@ -0,0 +1,1029 @@
+/*
+ * 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 <sound/driver.h>
+#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/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)] = 0};
+
+module_param_array(index, int, NULL, 0444);
+MODULE_PARM_DESC(index, "Index value for 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 {
+ 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 *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;
+
+ snd_pcm_substream_t *substream;
+} snd_card_saa7134_pcm_t;
+
+static snd_card_t *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(snd_pcm_substream_t * substream,
+ int cmd)
+{
+ snd_pcm_runtime_t *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)
+{
+ if (!dev->dmasound.blksize)
+ BUG();
+
+ videobuf_dma_free(&dev->dmasound.dma);
+
+ dev->dmasound.blocks = 0;
+ dev->dmasound.blksize = 0;
+ dev->dmasound.bufsize = 0;
+
+ return 0;
+}
+
+
+/*
+ * 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 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(snd_pcm_substream_t * substream)
+{
+ snd_pcm_runtime_t *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 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 = 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(snd_pcm_runtime_t *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(snd_pcm_substream_t * substream,
+ snd_pcm_hw_params_t * 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_dma_pci_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_dma_pci_map(dev->pci, &dev->dmasound.dma))) {
+ dsp_buffer_free(dev);
+ return err;
+ }
+ if (0 != (err = saa7134_pgtable_alloc(dev->pci,&dev->dmasound.pt))) {
+ videobuf_dma_pci_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_dma_pci_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(snd_pcm_substream_t * 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_dma_pci_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(snd_pcm_substream_t * 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(snd_pcm_substream_t * substream)
+{
+ snd_pcm_runtime_t *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;
+
+ down(&dev->dmasound.lock);
+
+ dev->dmasound.read_count = 0;
+ dev->dmasound.read_offset = 0;
+
+ up(&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 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);
+ 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(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * 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(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);
+ 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(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * 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 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 void snd_saa7134_free(snd_card_t * 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)
+{
+
+ snd_card_t *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,
+ SA_SHIRQ | SA_INTERRUPT, 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;
+
+ init_MUTEX(&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;
+
+ 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;
+ }
+ }
+
+ dmasound_init = alsa_device_init;
+ dmasound_exit = alsa_device_exit;
+
+ 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]);
+ }
+
+ printk(KERN_INFO "saa7134 ALSA driver for DMA sound unloaded\n");
+
+ return;
+}
+
+module_init(saa7134_alsa_init);
+module_exit(saa7134_alsa_exit);
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Ricardo Cerqueira");