[PATCH] ASoC: bcm2835: Increase channels_max to 8
Matt Flax
flatmax at flatmax.org
Wed Feb 1 15:37:44 PST 2017
The AudioInjector Octo sound card operates with 8 channels,
however the bcm2835 I2S driver was limited to 2 channels.
This patch increases the channel capability to 8 by setting
channels_max to 8 in the bcm2835_i2s_dai structure. It also
adds the 8 channel condition to the channel guard in the
bcm2835_i2s_hw_params function.
Signed-off-by: Matt Flax <flatmax at flatmax.org>
---
sound/soc/bcm/bcm2835-i2s.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/sound/soc/bcm/bcm2835-i2s.c b/sound/soc/bcm/bcm2835-i2s.c
index 6ba2049..c65ce28 100644
--- a/sound/soc/bcm/bcm2835-i2s.c
+++ b/sound/soc/bcm/bcm2835-i2s.c
@@ -312,6 +312,7 @@ static int bcm2835_i2s_hw_params(struct snd_pcm_substream *substream,
switch (params_channels(params)) {
case 2:
+ case 8:
format = BCM2835_I2S_CH1(format) | BCM2835_I2S_CH2(format);
format |= BCM2835_I2S_CH1(BCM2835_I2S_CHPOS(ch1pos));
format |= BCM2835_I2S_CH2(BCM2835_I2S_CHPOS(ch2pos));
@@ -577,7 +578,7 @@ static struct snd_soc_dai_driver bcm2835_i2s_dai = {
.probe = bcm2835_i2s_dai_probe,
.playback = {
.channels_min = 2,
- .channels_max = 2,
+ .channels_max = 8,
.rates = SNDRV_PCM_RATE_8000_192000,
.formats = SNDRV_PCM_FMTBIT_S16_LE
| SNDRV_PCM_FMTBIT_S24_LE
@@ -585,7 +586,7 @@ static struct snd_soc_dai_driver bcm2835_i2s_dai = {
},
.capture = {
.channels_min = 2,
- .channels_max = 2,
+ .channels_max = 8,
.rates = SNDRV_PCM_RATE_8000_192000,
.formats = SNDRV_PCM_FMTBIT_S16_LE
| SNDRV_PCM_FMTBIT_S24_LE
--
2.7.4
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