[alsa-devel] [PATCH 2/4] ASoC: wm5102: Use async writes

Mark Brown broonie at kernel.org
Thu Dec 12 12:07:39 CET 2013

From: Mark Brown <broonie at linaro.org>

When writing the patch write to the device asynchronously, allowing better
performance when used with a bus like SPI which supports this by
minimising the need to context switch back to the driver to get the
next bit of data.

Signed-off-by: Mark Brown <broonie at linaro.org>
 sound/soc/codecs/wm5102.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sound/soc/codecs/wm5102.c b/sound/soc/codecs/wm5102.c
index a08e8bf6d07c..ce9c8e14d4bd 100644
--- a/sound/soc/codecs/wm5102.c
+++ b/sound/soc/codecs/wm5102.c
@@ -601,8 +601,8 @@ static int wm5102_sysclk_ev(struct snd_soc_dapm_widget *w,
 		if (patch)
 			for (i = 0; i < patch_size; i++)
-				regmap_write(regmap, patch[i].reg,
-					     patch[i].def);
+				regmap_write_async(regmap, patch[i].reg,
+						   patch[i].def);

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