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>

1 files changed, 6 insertions, 4 deletions

diff --git a/sound/soc/codecs/tlv320dac33.c b/sound/soc/codecs/tlv320dac33.c
index 58349dcd1a6e..d251ff54a2d3 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)