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Commit 84eae18c authored by Peter Ujfalusi's avatar Peter Ujfalusi Committed by Liam Girdwood
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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: default avatarPeter Ujfalusi <peter.ujfalusi@nokia.com>
Acked-by: default avatarMark Borwn <broonie@opensource.wolfsonmicro.com>
Signed-off-by: default avatarLiam Girdwood <lrg@slimlogic.co.uk>
parent 872a64d7

sound/soc/codecs/tlv320dac33.c

+6 −4
Original line number Diff line number Diff line
@@ -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)