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@@ -118,7 +118,7 @@ static struct snd_pcm_hardware snd_at73c213_playback_hw = {
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.rates = SNDRV_PCM_RATE_CONTINUOUS,
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.rate_min = 8000, /* Replaced by chip->bitrate later. */
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.rate_max = 50000, /* Replaced by chip->bitrate later. */
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- .channels_min = 2,
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+ .channels_min = 1,
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.channels_max = 2,
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.buffer_bytes_max = 64 * 1024 - 1,
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.period_bytes_min = 512,
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@@ -229,6 +229,14 @@ static int snd_at73c213_pcm_close(struct snd_pcm_substream *substream)
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static int snd_at73c213_pcm_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *hw_params)
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{
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+ struct snd_at73c213 *chip = snd_pcm_substream_chip(substream);
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+ int channels = params_channels(hw_params);
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+ int val;
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+
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+ val = ssc_readl(chip->ssc->regs, TFMR);
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+ val = SSC_BFINS(TFMR_DATNB, channels - 1, val);
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+ ssc_writel(chip->ssc->regs, TFMR, val);
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+
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return snd_pcm_lib_malloc_pages(substream,
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params_buffer_bytes(hw_params));
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}
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@@ -250,10 +258,12 @@ static int snd_at73c213_pcm_prepare(struct snd_pcm_substream *substream)
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ssc_writel(chip->ssc->regs, PDC_TPR,
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(long)runtime->dma_addr);
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- ssc_writel(chip->ssc->regs, PDC_TCR, runtime->period_size * 2);
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+ ssc_writel(chip->ssc->regs, PDC_TCR,
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+ runtime->period_size * runtime->channels);
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ssc_writel(chip->ssc->regs, PDC_TNPR,
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(long)runtime->dma_addr + block_size);
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- ssc_writel(chip->ssc->regs, PDC_TNCR, runtime->period_size * 2);
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+ ssc_writel(chip->ssc->regs, PDC_TNCR,
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+ runtime->period_size * runtime->channels);
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return 0;
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}
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@@ -376,7 +386,8 @@ static irqreturn_t snd_at73c213_interrupt(int irq, void *dev_id)
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ssc_writel(chip->ssc->regs, PDC_TNPR,
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(long)runtime->dma_addr + offset);
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- ssc_writel(chip->ssc->regs, PDC_TNCR, runtime->period_size * 2);
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+ ssc_writel(chip->ssc->regs, PDC_TNCR,
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+ runtime->period_size * runtime->channels);
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retval = IRQ_HANDLED;
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}
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