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authorPeter Ujfalusi <peter.ujfalusi@nokia.com>2010-10-22 15:11:20 +0300
committerLiam Girdwood <lrg@slimlogic.co.uk>2010-10-23 14:43:08 +0100
commit84eae18c867fcb7ce43d5830e23377ed33e45df9 (patch)
tree04481cde89ca1a72aaa870f58fe8e0d60661d7b0 /sound
parent872a64d7e73f0e4dc435295da393db25332172b8 (diff)
downloadlinux-2.6.38-lt-ux500-84eae18c867fcb7ce43d5830e23377ed33e45df9.tar.gz
ASoC: tlv320dac33: Use usleep_range for delays
Switch to use the more precise usleep_range instead of msleep(). Replace the udelay with usleep_range to remove the busy loop waiting. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com> Acked-by: Mark Borwn <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
Diffstat (limited to 'sound')
-rw-r--r--sound/soc/codecs/tlv320dac33.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/sound/soc/codecs/tlv320dac33.c b/sound/soc/codecs/tlv320dac33.c
index 58349dcd1a6..d251ff54a2d 100644
--- a/sound/soc/codecs/tlv320dac33.c
+++ b/sound/soc/codecs/tlv320dac33.c
@@ -669,6 +669,7 @@ static int dac33_set_bias_level(struct snd_soc_codec *codec,
static inline void dac33_prefill_handler(struct tlv320dac33_priv *dac33)
{
struct snd_soc_codec *codec = dac33->codec;
+ unsigned int delay;
switch (dac33->fifo_mode) {
case DAC33_FIFO_MODE1:
@@ -684,8 +685,9 @@ static inline void dac33_prefill_handler(struct tlv320dac33_priv *dac33)
dac33_write16(codec, DAC33_PREFILL_MSB,
DAC33_THRREG(dac33->alarm_threshold));
/* Enable Alarm Threshold IRQ with a delay */
- udelay(SAMPLES_TO_US(dac33->burst_rate,
- dac33->alarm_threshold));
+ delay = SAMPLES_TO_US(dac33->burst_rate,
+ dac33->alarm_threshold) + 1000;
+ usleep_range(delay, delay + 500);
dac33_write(codec, DAC33_FIFO_IRQ_MASK, DAC33_MAT);
break;
case DAC33_FIFO_MODE7:
@@ -785,11 +787,11 @@ static irqreturn_t dac33_interrupt_handler(int irq, void *dev)
static void dac33_oscwait(struct snd_soc_codec *codec)
{
- int timeout = 20;
+ int timeout = 60;
u8 reg;
do {
- msleep(1);
+ usleep_range(1000, 2000);
dac33_read(codec, DAC33_INT_OSC_STATUS, &reg);
} while (((reg & 0x03) != DAC33_OSCSTATUS_NORMAL) && timeout--);
if ((reg & 0x03) != DAC33_OSCSTATUS_NORMAL)