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authorSongjun Wu <songjun.wu@atmel.com>2015-11-19 06:45:32 +0300
committerMark Brown <broonie@kernel.org>2015-11-20 21:07:23 +0300
commit07c55d395041c5b4cbdffd39a1bba41a61f87fe9 (patch)
tree149947eb598b38d6b320428a2f5d0370bc81c343 /sound/soc/atmel/atmel-classd.c
parent8005c49d9aea74d382f474ce11afbbc7d7130bec (diff)
downloadlinux-07c55d395041c5b4cbdffd39a1bba41a61f87fe9.tar.xz
ASoC: Atmel: ClassD: supports mono audio
Modify the code to support mono audio. Signed-off-by: Songjun Wu <songjun.wu@atmel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/atmel/atmel-classd.c')
-rw-r--r--sound/soc/atmel/atmel-classd.c12
1 files changed, 8 insertions, 4 deletions
diff --git a/sound/soc/atmel/atmel-classd.c b/sound/soc/atmel/atmel-classd.c
index 8276675730ef..dca614177fef 100644
--- a/sound/soc/atmel/atmel-classd.c
+++ b/sound/soc/atmel/atmel-classd.c
@@ -106,7 +106,7 @@ static const struct snd_pcm_hardware atmel_classd_hw = {
.rates = ATMEL_CLASSD_RATES,
.rate_min = 8000,
.rate_max = 96000,
- .channels_min = 2,
+ .channels_min = 1,
.channels_max = 2,
.buffer_bytes_max = 64 * 1024,
.period_bytes_min = 256,
@@ -145,7 +145,7 @@ static const struct snd_soc_dai_ops atmel_classd_cpu_dai_ops = {
static struct snd_soc_dai_driver atmel_classd_cpu_dai = {
.playback = {
- .channels_min = 2,
+ .channels_min = 1,
.channels_max = 2,
.rates = ATMEL_CLASSD_RATES,
.formats = SNDRV_PCM_FMTBIT_S16_LE,},
@@ -171,9 +171,13 @@ atmel_classd_platform_configure_dma(struct snd_pcm_substream *substream,
return -EINVAL;
}
+ if (params_channels(params) == 1)
+ slave_config->dst_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
+ else
+ slave_config->dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
+
slave_config->direction = DMA_MEM_TO_DEV;
slave_config->dst_addr = dd->phy_base + CLASSD_THR;
- slave_config->dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
slave_config->dst_maxburst = 1;
slave_config->src_maxburst = 1;
slave_config->device_fc = false;
@@ -486,7 +490,7 @@ static struct snd_soc_dai_driver atmel_classd_codec_dai = {
.name = ATMEL_CLASSD_CODEC_DAI_NAME,
.playback = {
.stream_name = "Playback",
- .channels_min = 2,
+ .channels_min = 1,
.channels_max = 2,
.rates = ATMEL_CLASSD_RATES,
.formats = SNDRV_PCM_FMTBIT_S16_LE,