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ASoC: davinci-mcasp: Only disable inactive serializer

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As a side effect of the following commit, the active TX
serializer may get disabled which may result in distorted
audio output.

ASoC: davinci-mcasp: Add support for multichannel playback
(2952b27e2e)

For example, if a 4 channel I2S playback with two TX serializers
is activated. Later on, if a recording of 2 channels, with only 1 RX
serializer is started, which will also disable one of the TX
serializer because max_active_serializers is only calculated for
RX (recording) stream. This patch fixes this issue.

Signed-off-by: Vishal Thanki <vishalthanki@gmail.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Vishal Thanki 2018-05-11 14:33:37 +02:00 committed by Mark Brown
parent 063422ca2a
commit 096a8f835e
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 1 additions and 1 deletions
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2
sound/soc/davinci/davinci-mcasp.c
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@ -789,7 +789,7 @@ static int mcasp_common_hw_param(struct davinci_mcasp *mcasp, int stream,
rx_ser < max_active_serializers) {
mcasp_clr_bits(mcasp, DAVINCI_MCASP_PDIR_REG, AXR(i));
rx_ser++;
} else {
} else if (mcasp->serial_dir[i] == INACTIVE_MODE) {
mcasp_mod_bits(mcasp, DAVINCI_MCASP_XRSRCTL_REG(i),
SRMOD_INACTIVE, SRMOD_MASK);
}