On Thu, 2010-04-22 at 16:57 +0300, Peter Ujfalusi wrote:
Alarm threshold interrupt is triggered right after the playback start. This interrupt is recieved during the first burst period, and caused the state machine to write additional nSample command, which has to be avoided. To fix this issue move the DAC33 interrupt unmasking after we configured the PREFILL register with a small delay.
Signed-off-by: Peter Ujfalusi peter.ujfalusi@nokia.com
sound/soc/codecs/tlv320dac33.c | 6 ++++-- 1 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/sound/soc/codecs/tlv320dac33.c b/sound/soc/codecs/tlv320dac33.c index 824bb35..8a7265f 100644 --- a/sound/soc/codecs/tlv320dac33.c +++ b/sound/soc/codecs/tlv320dac33.c @@ -557,9 +557,12 @@ static inline void dac33_prefill_handler(struct tlv320dac33_priv *dac33) switch (dac33->fifo_mode) { case DAC33_FIFO_MODE1: dac33_write16(codec, DAC33_NSAMPLE_MSB,
DAC33_THRREG(dac33->nsample));
DAC33_THRREG(dac33->nsample + dac33->alarm_threshold));/* Enable Alarm Threshold IRQ */msleep(2);
Does this sleep depend on rate/frame_size in any way ?
Liam