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ASoC: wm_adsp: Add small delay while polling DSP RAM start

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Some devices are getting very close to the limit whilst polling the RAM
start, this patch adds a small delay to this loop to give a longer
startup timeout.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Cc: stable@vger.kernel.org
This commit is contained in:
Charles Keepax
2013-12-18 09:25:49 +00:00
committed by Mark Brown
parent 6ce4eac1f6
commit 939fd1e8d9
1 changed files with 7 additions and 3 deletions
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10
sound/soc/codecs/wm_adsp.c
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@@ -1474,13 +1474,17 @@ static int wm_adsp2_ena(struct wm_adsp *dsp)
return ret; return ret;
/* Wait for the RAM to start, should be near instantaneous */ /* Wait for the RAM to start, should be near instantaneous */
count = 0; for (count = 0; count < 10; ++count) {
do {
ret = regmap_read(dsp->regmap, dsp->base + ADSP2_STATUS1, ret = regmap_read(dsp->regmap, dsp->base + ADSP2_STATUS1,
&val); &val);
if (ret != 0) if (ret != 0)
return ret; return ret;
} while (!(val & ADSP2_RAM_RDY) && ++count < 10);
if (val & ADSP2_RAM_RDY)
break;
msleep(1);
}
if (!(val & ADSP2_RAM_RDY)) { if (!(val & ADSP2_RAM_RDY)) {
adsp_err(dsp, "Failed to start DSP RAM\n"); adsp_err(dsp, "Failed to start DSP RAM\n");