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| author | Peter Ujfalusi <peter.ujfalusi@nokia.com> | 2010-10-22 15:11:20 +0300 |
|---|---|---|
| committer | Liam Girdwood <lrg@slimlogic.co.uk> | 2010-10-23 14:43:08 +0100 |
| commit | 84eae18c867fcb7ce43d5830e23377ed33e45df9 (patch) | |
| tree | 04481cde89ca1a72aaa870f58fe8e0d60661d7b0 /sound | |
| parent | 872a64d7e73f0e4dc435295da393db25332172b8 (diff) | |
| download | linux-84eae18c867fcb7ce43d5830e23377ed33e45df9.tar.gz linux-84eae18c867fcb7ce43d5830e23377ed33e45df9.tar.bz2 linux-84eae18c867fcb7ce43d5830e23377ed33e45df9.zip | |
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.c | 10 |
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, ®); } while (((reg & 0x03) != DAC33_OSCSTATUS_NORMAL) && timeout--); if ((reg & 0x03) != DAC33_OSCSTATUS_NORMAL) |