[PATCH 3/3] ASoC: tlv320aic3x: Complete the soc-cache conversion

[Jarkko Nikula <jhnikula@gmail.com>]

Complete the phasing out of aic3x_read_reg_cache, aic3x_write_reg_cache,
aic3x_read and aic3x_write calls.

This patch replaces the aic3x_read with codec->hw_read that points to a
function implemented by soc-cache. There is no need to cache the value from
chip since the functions using aic3x_read are interested only read-only
bits.

Signed-off-by: Jarkko Nikula <jhnikula@gmail.com>
---
 sound/soc/codecs/tlv320aic3x.c |   32 +++-----------------------------
 1 files changed, 3 insertions(+), 29 deletions(-)

diff --git a/sound/soc/codecs/tlv320aic3x.c b/sound/soc/codecs/tlv320aic3x.c
index 86e5a58..9737afa 100644
--- a/sound/soc/codecs/tlv320aic3x.c
+++ b/sound/soc/codecs/tlv320aic3x.c
@@ -111,32 +111,6 @@ static const u8 aic3x_reg[AIC3X_CACHEREGNUM] = {
 	0x00, 0x00, 0x02,	/* 100 */
 };
 
-/*
- * write aic3x register cache
- */
-static inline void aic3x_write_reg_cache(struct snd_soc_codec *codec,
-					 u8 reg, u8 value)
-{
-	u8 *cache = codec->reg_cache;
-	if (reg >= AIC3X_CACHEREGNUM)
-		return;
-	cache[reg] = value;
-}
-
-/*
- * read from the aic3x register space
- */
-static int aic3x_read(struct snd_soc_codec *codec, unsigned int reg,
-		      u8 *value)
-{
-	*value = reg & 0xff;
-
-	value[0] = i2c_smbus_read_byte_data(codec->control_data, value[0]);
-
-	aic3x_write_reg_cache(codec, reg, *value);
-	return 0;
-}
-
 #define SOC_DAPM_SINGLE_AIC3X(xname, reg, shift, mask, invert) \
 {	.iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 	.info = snd_soc_info_volsw, \
@@ -1076,7 +1050,7 @@ int aic3x_get_gpio(struct snd_soc_codec *codec, int gpio)
 	u8 reg = gpio ? AIC3X_GPIO2_REG : AIC3X_GPIO1_REG;
 	u8 val, bit = gpio ? 2: 1;
 
-	aic3x_read(codec, reg, &val);
+	val = codec->hw_read(codec, reg);
 	return (val >> bit) & 1;
 }
 EXPORT_SYMBOL_GPL(aic3x_get_gpio);
@@ -1103,7 +1077,7 @@ EXPORT_SYMBOL_GPL(aic3x_set_headset_detection);
 int aic3x_headset_detected(struct snd_soc_codec *codec)
 {
 	u8 val;
-	aic3x_read(codec, AIC3X_HEADSET_DETECT_CTRL_B, &val);
+	val = codec->hw_read(codec, AIC3X_HEADSET_DETECT_CTRL_B);
 	return (val >> 4) & 1;
 }
 EXPORT_SYMBOL_GPL(aic3x_headset_detected);
@@ -1111,7 +1085,7 @@ EXPORT_SYMBOL_GPL(aic3x_headset_detected);
 int aic3x_button_pressed(struct snd_soc_codec *codec)
 {
 	u8 val;
-	aic3x_read(codec, AIC3X_HEADSET_DETECT_CTRL_B, &val);
+	val = codec->hw_read(codec, AIC3X_HEADSET_DETECT_CTRL_B);
 	return (val >> 5) & 1;
 }
 EXPORT_SYMBOL_GPL(aic3x_button_pressed);
-- 
1.7.1