[alsa-devel] [PATCH 4/4] ASoC: wm8988: Use snd_soc_update_bits for read-modify-write

Axel Lin axel.lin at gmail.com
Tue Oct 4 03:59:26 CEST 2011


Use snd_soc_update_bits for read-modify-write register access instead of
open-coding it using snd_soc_read and snd_soc_write

Signed-off-by: Axel Lin <axel.lin at gmail.com>
---
 sound/soc/codecs/wm8988.c |   15 +++++----------
 1 files changed, 5 insertions(+), 10 deletions(-)

diff --git a/sound/soc/codecs/wm8988.c b/sound/soc/codecs/wm8988.c
index d7170f1..5099e62 100644
--- a/sound/soc/codecs/wm8988.c
+++ b/sound/soc/codecs/wm8988.c
@@ -774,16 +774,11 @@ static int wm8988_probe(struct snd_soc_codec *codec)
 	}
 
 	/* set the update bits (we always update left then right) */
-	reg = snd_soc_read(codec, WM8988_RADC);
-	snd_soc_write(codec, WM8988_RADC, reg | 0x100);
-	reg = snd_soc_read(codec, WM8988_RDAC);
-	snd_soc_write(codec, WM8988_RDAC, reg | 0x0100);
-	reg = snd_soc_read(codec, WM8988_ROUT1V);
-	snd_soc_write(codec, WM8988_ROUT1V, reg | 0x0100);
-	reg = snd_soc_read(codec, WM8988_ROUT2V);
-	snd_soc_write(codec, WM8988_ROUT2V, reg | 0x0100);
-	reg = snd_soc_read(codec, WM8988_RINVOL);
-	snd_soc_write(codec, WM8988_RINVOL, reg | 0x0100);
+	snd_soc_update_bits(codec, WM8988_RADC, 0x0100, 0x0100);
+	snd_soc_update_bits(codec, WM8988_RDAC, 0x0100, 0x0100);
+	snd_soc_update_bits(codec, WM8988_ROUT1V, 0x0100, 0x0100);
+	snd_soc_update_bits(codec, WM8988_ROUT2V, 0x0100, 0x0100);
+	snd_soc_update_bits(codec, WM8988_RINVOL, 0x0100, 0x0100);
 
 	wm8988_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 
-- 
1.7.4.1





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