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@@ -33,11 +33,11 @@
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SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE | \
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SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE)
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-struct kirkwood_dma_priv {
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- struct snd_pcm_substream *play_stream;
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- struct snd_pcm_substream *rec_stream;
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- struct kirkwood_dma_data *data;
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-};
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+static struct kirkwood_dma_data *kirkwood_priv(struct snd_pcm_substream *subs)
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+{
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+ struct snd_soc_pcm_runtime *soc_runtime = subs->private_data;
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+ return snd_soc_dai_get_drvdata(soc_runtime->cpu_dai);
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+}
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static struct snd_pcm_hardware kirkwood_dma_snd_hw = {
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.info = (SNDRV_PCM_INFO_INTERLEAVED |
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@@ -51,7 +51,7 @@ static struct snd_pcm_hardware kirkwood_dma_snd_hw = {
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.rate_max = 384000,
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.channels_min = 1,
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.channels_max = 8,
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- .buffer_bytes_max = KIRKWOOD_SND_MAX_PERIOD_BYTES * KIRKWOOD_SND_MAX_PERIODS,
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+ .buffer_bytes_max = KIRKWOOD_SND_MAX_BUFFER_BYTES,
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.period_bytes_min = KIRKWOOD_SND_MIN_PERIOD_BYTES,
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.period_bytes_max = KIRKWOOD_SND_MAX_PERIOD_BYTES,
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.periods_min = KIRKWOOD_SND_MIN_PERIODS,
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@@ -63,8 +63,7 @@ static u64 kirkwood_dma_dmamask = DMA_BIT_MASK(32);
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static irqreturn_t kirkwood_dma_irq(int irq, void *dev_id)
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{
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- struct kirkwood_dma_priv *prdata = dev_id;
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- struct kirkwood_dma_data *priv = prdata->data;
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+ struct kirkwood_dma_data *priv = dev_id;
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unsigned long mask, status, cause;
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mask = readl(priv->io + KIRKWOOD_INT_MASK);
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@@ -89,10 +88,10 @@ static irqreturn_t kirkwood_dma_irq(int irq, void *dev_id)
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writel(status, priv->io + KIRKWOOD_INT_CAUSE);
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if (status & KIRKWOOD_INT_CAUSE_PLAY_BYTES)
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- snd_pcm_period_elapsed(prdata->play_stream);
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+ snd_pcm_period_elapsed(priv->substream_play);
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if (status & KIRKWOOD_INT_CAUSE_REC_BYTES)
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- snd_pcm_period_elapsed(prdata->rec_stream);
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+ snd_pcm_period_elapsed(priv->substream_rec);
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return IRQ_HANDLED;
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}
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@@ -126,15 +125,10 @@ static int kirkwood_dma_open(struct snd_pcm_substream *substream)
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{
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int err;
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struct snd_pcm_runtime *runtime = substream->runtime;
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- struct snd_soc_pcm_runtime *soc_runtime = substream->private_data;
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- struct snd_soc_platform *platform = soc_runtime->platform;
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- struct snd_soc_dai *cpu_dai = soc_runtime->cpu_dai;
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- struct kirkwood_dma_data *priv;
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- struct kirkwood_dma_priv *prdata = snd_soc_platform_get_drvdata(platform);
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+ struct kirkwood_dma_data *priv = kirkwood_priv(substream);
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const struct mbus_dram_target_info *dram;
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unsigned long addr;
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- priv = snd_soc_dai_get_dma_data(cpu_dai, substream);
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snd_soc_set_runtime_hwparams(substream, &kirkwood_dma_snd_hw);
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/* Ensure that all constraints linked to dma burst are fulfilled */
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@@ -157,21 +151,11 @@ static int kirkwood_dma_open(struct snd_pcm_substream *substream)
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if (err < 0)
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return err;
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- if (prdata == NULL) {
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- prdata = kzalloc(sizeof(struct kirkwood_dma_priv), GFP_KERNEL);
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- if (prdata == NULL)
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- return -ENOMEM;
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-
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- prdata->data = priv;
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-
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+ if (!priv->substream_play && !priv->substream_rec) {
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err = request_irq(priv->irq, kirkwood_dma_irq, IRQF_SHARED,
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- "kirkwood-i2s", prdata);
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- if (err) {
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- kfree(prdata);
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+ "kirkwood-i2s", priv);
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+ if (err)
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return -EBUSY;
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- }
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-
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- snd_soc_platform_set_drvdata(platform, prdata);
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/*
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* Enable Error interrupts. We're only ack'ing them but
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@@ -183,11 +167,11 @@ static int kirkwood_dma_open(struct snd_pcm_substream *substream)
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dram = mv_mbus_dram_info();
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addr = substream->dma_buffer.addr;
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
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- prdata->play_stream = substream;
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+ priv->substream_play = substream;
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kirkwood_dma_conf_mbus_windows(priv->io,
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KIRKWOOD_PLAYBACK_WIN, addr, dram);
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} else {
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- prdata->rec_stream = substream;
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+ priv->substream_rec = substream;
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kirkwood_dma_conf_mbus_windows(priv->io,
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KIRKWOOD_RECORD_WIN, addr, dram);
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}
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@@ -197,27 +181,19 @@ static int kirkwood_dma_open(struct snd_pcm_substream *substream)
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static int kirkwood_dma_close(struct snd_pcm_substream *substream)
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{
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- struct snd_soc_pcm_runtime *soc_runtime = substream->private_data;
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- struct snd_soc_dai *cpu_dai = soc_runtime->cpu_dai;
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- struct snd_soc_platform *platform = soc_runtime->platform;
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- struct kirkwood_dma_priv *prdata = snd_soc_platform_get_drvdata(platform);
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- struct kirkwood_dma_data *priv;
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-
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- priv = snd_soc_dai_get_dma_data(cpu_dai, substream);
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+ struct kirkwood_dma_data *priv = kirkwood_priv(substream);
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- if (!prdata || !priv)
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+ if (!priv)
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return 0;
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
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- prdata->play_stream = NULL;
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+ priv->substream_play = NULL;
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else
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- prdata->rec_stream = NULL;
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+ priv->substream_rec = NULL;
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- if (!prdata->play_stream && !prdata->rec_stream) {
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+ if (!priv->substream_play && !priv->substream_rec) {
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writel(0, priv->io + KIRKWOOD_ERR_MASK);
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- free_irq(priv->irq, prdata);
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- kfree(prdata);
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- snd_soc_platform_set_drvdata(platform, NULL);
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+ free_irq(priv->irq, priv);
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}
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return 0;
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@@ -243,13 +219,9 @@ static int kirkwood_dma_hw_free(struct snd_pcm_substream *substream)
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static int kirkwood_dma_prepare(struct snd_pcm_substream *substream)
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{
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struct snd_pcm_runtime *runtime = substream->runtime;
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- struct snd_soc_pcm_runtime *soc_runtime = substream->private_data;
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- struct snd_soc_dai *cpu_dai = soc_runtime->cpu_dai;
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- struct kirkwood_dma_data *priv;
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+ struct kirkwood_dma_data *priv = kirkwood_priv(substream);
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unsigned long size, count;
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- priv = snd_soc_dai_get_dma_data(cpu_dai, substream);
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-
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/* compute buffer size in term of "words" as requested in specs */
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size = frames_to_bytes(runtime, runtime->buffer_size);
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size = (size>>2)-1;
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@@ -272,13 +244,9 @@ static int kirkwood_dma_prepare(struct snd_pcm_substream *substream)
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static snd_pcm_uframes_t kirkwood_dma_pointer(struct snd_pcm_substream
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*substream)
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{
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- struct snd_soc_pcm_runtime *soc_runtime = substream->private_data;
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- struct snd_soc_dai *cpu_dai = soc_runtime->cpu_dai;
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- struct kirkwood_dma_data *priv;
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+ struct kirkwood_dma_data *priv = kirkwood_priv(substream);
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snd_pcm_uframes_t count;
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- priv = snd_soc_dai_get_dma_data(cpu_dai, substream);
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-
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
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count = bytes_to_frames(substream->runtime,
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readl(priv->io + KIRKWOOD_PLAY_BYTE_COUNT));
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@@ -366,36 +334,8 @@ static void kirkwood_dma_free_dma_buffers(struct snd_pcm *pcm)
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}
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}
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-static struct snd_soc_platform_driver kirkwood_soc_platform = {
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+struct snd_soc_platform_driver kirkwood_soc_platform = {
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.ops = &kirkwood_dma_ops,
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.pcm_new = kirkwood_dma_new,
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.pcm_free = kirkwood_dma_free_dma_buffers,
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};
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-
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-static int kirkwood_soc_platform_probe(struct platform_device *pdev)
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-{
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- return snd_soc_register_platform(&pdev->dev, &kirkwood_soc_platform);
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-}
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-
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-static int kirkwood_soc_platform_remove(struct platform_device *pdev)
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-{
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- snd_soc_unregister_platform(&pdev->dev);
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- return 0;
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-}
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-
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-static struct platform_driver kirkwood_pcm_driver = {
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- .driver = {
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- .name = "kirkwood-pcm-audio",
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- .owner = THIS_MODULE,
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- },
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-
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- .probe = kirkwood_soc_platform_probe,
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- .remove = kirkwood_soc_platform_remove,
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-};
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-
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-module_platform_driver(kirkwood_pcm_driver);
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-
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-MODULE_AUTHOR("Arnaud Patard <arnaud.patard@rtp-net.org>");
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-MODULE_DESCRIPTION("Marvell Kirkwood Audio DMA module");
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-MODULE_LICENSE("GPL");
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-MODULE_ALIAS("platform:kirkwood-pcm-audio");
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