diff options
| author | Matthias Kaehlcke <mka@chromium.org> | 2018-01-05 23:12:42 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2018-01-08 12:28:33 +0100 |
| commit | db51707b9c9aeedd310ebce60f15d5bb006567e0 (patch) | |
| tree | 1e375035e55cebcb5d5b117c481b2a74d3538170 /sound/soc/rockchip/rockchip_i2s.c | |
| parent | Linux 4.15-rc1 (diff) | |
| download | linux-db51707b9c9aeedd310ebce60f15d5bb006567e0.tar.xz linux-db51707b9c9aeedd310ebce60f15d5bb006567e0.zip | |
ASoC: rockchip: i2s: Support mono capture
The Rockchip I2S controller only allows to configure even numbers of
capture channels. It is still possible to capture monophonic audio by
using dual-channel mode and ignoring the 'data' from the second
channel.
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/rockchip/rockchip_i2s.c')
| -rw-r--r-- | sound/soc/rockchip/rockchip_i2s.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/sound/soc/rockchip/rockchip_i2s.c b/sound/soc/rockchip/rockchip_i2s.c index 908211e1d6fc..cc22ab3d10dd 100644 --- a/sound/soc/rockchip/rockchip_i2s.c +++ b/sound/soc/rockchip/rockchip_i2s.c @@ -328,6 +328,7 @@ static int rockchip_i2s_hw_params(struct snd_pcm_substream *substream, val |= I2S_CHN_4; break; case 2: + case 1: val |= I2S_CHN_2; break; default: @@ -460,7 +461,7 @@ static struct snd_soc_dai_driver rockchip_i2s_dai = { }, .capture = { .stream_name = "Capture", - .channels_min = 2, + .channels_min = 1, .channels_max = 2, .rates = SNDRV_PCM_RATE_8000_192000, .formats = (SNDRV_PCM_FMTBIT_S8 | @@ -654,7 +655,7 @@ static int rockchip_i2s_probe(struct platform_device *pdev) } if (!of_property_read_u32(node, "rockchip,capture-channels", &val)) { - if (val >= 2 && val <= 8) + if (val >= 1 && val <= 8) soc_dai->capture.channels_max = val; } |