From: Axel Lin <axel.lin@gmail.com>
To: alsa-devel@alsa-project.org
Cc: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>,
Mark Brown <broonie@opensource.wolfsonmicro.com>,
Liam Girdwood <lrg@ti.com>
Subject: [PATCH] ASoC: wm8960: Use snd_soc_update_bits for read-modify-write
Date: Thu, 08 Dec 2011 11:09:15 +0800 [thread overview]
Message-ID: <1323313755.20937.1.camel@phoenix> (raw)
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@gmail.com>
---
sound/soc/codecs/wm8960.c | 67 ++++++++++++++-------------------------------
1 files changed, 21 insertions(+), 46 deletions(-)
diff --git a/sound/soc/codecs/wm8960.c b/sound/soc/codecs/wm8960.c
index 6a9c41d..2315b86 100644
--- a/sound/soc/codecs/wm8960.c
+++ b/sound/soc/codecs/wm8960.c
@@ -543,30 +543,24 @@ static int wm8960_hw_params(struct snd_pcm_substream *substream,
static int wm8960_mute(struct snd_soc_dai *dai, int mute)
{
struct snd_soc_codec *codec = dai->codec;
- u16 mute_reg = snd_soc_read(codec, WM8960_DACCTL1) & 0xfff7;
if (mute)
- snd_soc_write(codec, WM8960_DACCTL1, mute_reg | 0x8);
+ snd_soc_update_bits(codec, WM8960_DACCTL1, 0x8, 0x8);
else
- snd_soc_write(codec, WM8960_DACCTL1, mute_reg);
+ snd_soc_update_bits(codec, WM8960_DACCTL1, 0x8, 0);
return 0;
}
static int wm8960_set_bias_level_out3(struct snd_soc_codec *codec,
enum snd_soc_bias_level level)
{
- u16 reg;
-
switch (level) {
case SND_SOC_BIAS_ON:
break;
case SND_SOC_BIAS_PREPARE:
/* Set VMID to 2x50k */
- reg = snd_soc_read(codec, WM8960_POWER1);
- reg &= ~0x180;
- reg |= 0x80;
- snd_soc_write(codec, WM8960_POWER1, reg);
+ snd_soc_update_bits(codec, WM8960_POWER1, 0x180, 0x80);
break;
case SND_SOC_BIAS_STANDBY:
@@ -579,23 +573,19 @@ static int wm8960_set_bias_level_out3(struct snd_soc_codec *codec,
WM8960_BUFDCOPEN | WM8960_BUFIOEN);
/* Enable & ramp VMID at 2x50k */
- reg = snd_soc_read(codec, WM8960_POWER1);
- reg |= 0x80;
- snd_soc_write(codec, WM8960_POWER1, reg);
+ snd_soc_update_bits(codec, WM8960_POWER1, 0x80, 0x80);
msleep(100);
/* Enable VREF */
- snd_soc_write(codec, WM8960_POWER1, reg | WM8960_VREF);
+ snd_soc_update_bits(codec, WM8960_POWER1, WM8960_VREF,
+ WM8960_VREF);
/* Disable anti-pop features */
snd_soc_write(codec, WM8960_APOP1, WM8960_BUFIOEN);
}
/* Set VMID to 2x250k */
- reg = snd_soc_read(codec, WM8960_POWER1);
- reg &= ~0x180;
- reg |= 0x100;
- snd_soc_write(codec, WM8960_POWER1, reg);
+ snd_soc_update_bits(codec, WM8960_POWER1, 0x180, 0x100);
break;
case SND_SOC_BIAS_OFF:
@@ -787,10 +777,8 @@ static int wm8960_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id,
/* Disable the PLL: even if we are changing the frequency the
* PLL needs to be disabled while we do so. */
- snd_soc_write(codec, WM8960_CLOCK1,
- snd_soc_read(codec, WM8960_CLOCK1) & ~1);
- snd_soc_write(codec, WM8960_POWER2,
- snd_soc_read(codec, WM8960_POWER2) & ~1);
+ snd_soc_update_bits(codec, WM8960_CLOCK1, 0x1, 0);
+ snd_soc_update_bits(codec, WM8960_POWER2, 0x1, 0);
if (!freq_in || !freq_out)
return 0;
@@ -809,11 +797,9 @@ static int wm8960_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id,
snd_soc_write(codec, WM8960_PLL1, reg);
/* Turn it on */
- snd_soc_write(codec, WM8960_POWER2,
- snd_soc_read(codec, WM8960_POWER2) | 1);
+ snd_soc_update_bits(codec, WM8960_POWER2, 0x1, 0x1);
msleep(250);
- snd_soc_write(codec, WM8960_CLOCK1,
- snd_soc_read(codec, WM8960_CLOCK1) | 1);
+ snd_soc_update_bits(codec, WM8960_CLOCK1, 0x1, 0x1);
return 0;
}
@@ -913,7 +899,6 @@ static int wm8960_probe(struct snd_soc_codec *codec)
struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
struct wm8960_data *pdata = dev_get_platdata(codec->dev);
int ret;
- u16 reg;
wm8960->set_bias_level = wm8960_set_bias_level_out3;
@@ -944,26 +929,16 @@ static int wm8960_probe(struct snd_soc_codec *codec)
wm8960->set_bias_level(codec, SND_SOC_BIAS_STANDBY);
/* Latch the update bits */
- reg = snd_soc_read(codec, WM8960_LINVOL);
- snd_soc_write(codec, WM8960_LINVOL, reg | 0x100);
- reg = snd_soc_read(codec, WM8960_RINVOL);
- snd_soc_write(codec, WM8960_RINVOL, reg | 0x100);
- reg = snd_soc_read(codec, WM8960_LADC);
- snd_soc_write(codec, WM8960_LADC, reg | 0x100);
- reg = snd_soc_read(codec, WM8960_RADC);
- snd_soc_write(codec, WM8960_RADC, reg | 0x100);
- reg = snd_soc_read(codec, WM8960_LDAC);
- snd_soc_write(codec, WM8960_LDAC, reg | 0x100);
- reg = snd_soc_read(codec, WM8960_RDAC);
- snd_soc_write(codec, WM8960_RDAC, reg | 0x100);
- reg = snd_soc_read(codec, WM8960_LOUT1);
- snd_soc_write(codec, WM8960_LOUT1, reg | 0x100);
- reg = snd_soc_read(codec, WM8960_ROUT1);
- snd_soc_write(codec, WM8960_ROUT1, reg | 0x100);
- reg = snd_soc_read(codec, WM8960_LOUT2);
- snd_soc_write(codec, WM8960_LOUT2, reg | 0x100);
- reg = snd_soc_read(codec, WM8960_ROUT2);
- snd_soc_write(codec, WM8960_ROUT2, reg | 0x100);
+ snd_soc_update_bits(codec, WM8960_LINVOL, 0x100, 0x100);
+ snd_soc_update_bits(codec, WM8960_RINVOL, 0x100, 0x100);
+ snd_soc_update_bits(codec, WM8960_LADC, 0x100, 0x100);
+ snd_soc_update_bits(codec, WM8960_RADC, 0x100, 0x100);
+ snd_soc_update_bits(codec, WM8960_LDAC, 0x100, 0x100);
+ snd_soc_update_bits(codec, WM8960_RDAC, 0x100, 0x100);
+ snd_soc_update_bits(codec, WM8960_LOUT1, 0x100, 0x100);
+ snd_soc_update_bits(codec, WM8960_ROUT1, 0x100, 0x100);
+ snd_soc_update_bits(codec, WM8960_LOUT2, 0x100, 0x100);
+ snd_soc_update_bits(codec, WM8960_ROUT2, 0x100, 0x100);
snd_soc_add_controls(codec, wm8960_snd_controls,
ARRAY_SIZE(wm8960_snd_controls));
--
1.7.5.4
next reply other threads:[~2011-12-08 3:09 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-08 3:09 Axel Lin [this message]
2011-12-08 3:37 ` [PATCH] ASoC: wm8960: Use snd_soc_update_bits for read-modify-write Mark Brown
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