diff options
| -rw-r--r-- | sound/spi/at73c213.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/sound/spi/at73c213.c b/sound/spi/at73c213.c index c1b0b9d..1355fe0 100644 --- a/sound/spi/at73c213.c +++ b/sound/spi/at73c213.c @@ -118,7 +118,7 @@ static struct snd_pcm_hardware snd_at73c213_playback_hw = { .rates = SNDRV_PCM_RATE_CONTINUOUS, .rate_min = 8000, /* Replaced by chip->bitrate later. */ .rate_max = 50000, /* Replaced by chip->bitrate later. */ - .channels_min = 2, + .channels_min = 1, .channels_max = 2, .buffer_bytes_max = 64 * 1024 - 1, .period_bytes_min = 512, @@ -229,6 +229,14 @@ static int snd_at73c213_pcm_close(struct snd_pcm_substream *substream) static int snd_at73c213_pcm_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *hw_params) { + struct snd_at73c213 *chip = snd_pcm_substream_chip(substream); + int channels = params_channels(hw_params); + int val; + + val = ssc_readl(chip->ssc->regs, TFMR); + val = SSC_BFINS(TFMR_DATNB, channels - 1, val); + ssc_writel(chip->ssc->regs, TFMR, val); + return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)); } @@ -250,10 +258,12 @@ static int snd_at73c213_pcm_prepare(struct snd_pcm_substream *substream) ssc_writel(chip->ssc->regs, PDC_TPR, (long)runtime->dma_addr); - ssc_writel(chip->ssc->regs, PDC_TCR, runtime->period_size * 2); + ssc_writel(chip->ssc->regs, PDC_TCR, + runtime->period_size * runtime->channels); ssc_writel(chip->ssc->regs, PDC_TNPR, (long)runtime->dma_addr + block_size); - ssc_writel(chip->ssc->regs, PDC_TNCR, runtime->period_size * 2); + ssc_writel(chip->ssc->regs, PDC_TNCR, + runtime->period_size * runtime->channels); return 0; } @@ -376,7 +386,8 @@ static irqreturn_t snd_at73c213_interrupt(int irq, void *dev_id) ssc_writel(chip->ssc->regs, PDC_TNPR, (long)runtime->dma_addr + offset); - ssc_writel(chip->ssc->regs, PDC_TNCR, runtime->period_size * 2); + ssc_writel(chip->ssc->regs, PDC_TNCR, + runtime->period_size * runtime->channels); retval = IRQ_HANDLED; } |
