1 files changed, 86 insertions, 158 deletions

diff --git a/sound/soc/codecs/wm8903.c b/sound/soc/codecs/wm8903.c
index c9baeae3e275..fe1307b500cf 100644
--- a/sound/soc/codecs/wm8903.c
+++ b/sound/soc/codecs/wm8903.c
@@ -225,94 +225,18 @@ struct wm8903_priv {
 	struct snd_pcm_substream *slave_substream;
 };
 
-
-static unsigned int wm8903_read_reg_cache(struct snd_soc_codec *codec,
-						 unsigned int reg)
-{
-	u16 *cache = codec->reg_cache;
-
-	BUG_ON(reg >= ARRAY_SIZE(wm8903_reg_defaults));
-
-	return cache[reg];
-}
-
-static unsigned int wm8903_hw_read(struct snd_soc_codec *codec, u8 reg)
-{
-	struct i2c_msg xfer[2];
-	u16 data;
-	int ret;
-	struct i2c_client *client = codec->control_data;
-
-	/* Write register */
-	xfer[0].addr = client->addr;
-	xfer[0].flags = 0;
-	xfer[0].len = 1;
-	xfer[0].buf = ®
-
-	/* Read data */
-	xfer[1].addr = client->addr;
-	xfer[1].flags = I2C_M_RD;
-	xfer[1].len = 2;
-	xfer[1].buf = (u8 *)&data;
-
-	ret = i2c_transfer(client->adapter, xfer, 2);
-	if (ret != 2) {
-		pr_err("i2c_transfer returned %d\n", ret);
-		return 0;
-	}
-
-	return (data >> 8) | ((data & 0xff) << 8);
-}
-
-static unsigned int wm8903_read(struct snd_soc_codec *codec,
-				unsigned int reg)
+static int wm8903_volatile_register(unsigned int reg)
 {
 	switch (reg) {
 	case WM8903_SW_RESET_AND_ID:
 	case WM8903_REVISION_NUMBER:
 	case WM8903_INTERRUPT_STATUS_1:
 	case WM8903_WRITE_SEQUENCER_4:
-		return wm8903_hw_read(codec, reg);
+		return 1;
 
 	default:
-		return wm8903_read_reg_cache(codec, reg);
-	}
-}
-
-static void wm8903_write_reg_cache(struct snd_soc_codec *codec,
-				   u16 reg, unsigned int value)
-{
-	u16 *cache = codec->reg_cache;
-
-	BUG_ON(reg >= ARRAY_SIZE(wm8903_reg_defaults));
-
-	switch (reg) {
-	case WM8903_SW_RESET_AND_ID:
-	case WM8903_REVISION_NUMBER:
-		break;
-
-	default:
-		cache[reg] = value;
-		break;
-	}
-}
-
-static int wm8903_write(struct snd_soc_codec *codec, unsigned int reg,
-			unsigned int value)
-{
-	u8 data[3];
-
-	wm8903_write_reg_cache(codec, reg, value);
-
-	/* Data format is 1 byte of address followed by 2 bytes of data */
-	data[0] = reg;
-	data[1] = (value >> 8) & 0xff;
-	data[2] = value & 0xff;
-
-	if (codec->hw_write(codec->control_data, data, 3) == 2)
 		return 0;
-	else
-		return -EIO;
+	}
 }
 
 static int wm8903_run_sequence(struct snd_soc_codec *codec, unsigned int start)
@@ -323,13 +247,13 @@ static int wm8903_run_sequence(struct snd_soc_codec *codec, unsigned int start)
 	BUG_ON(start > 48);
 
 	/* Enable the sequencer */
-	reg[0] = wm8903_read(codec, WM8903_WRITE_SEQUENCER_0);
+	reg[0] = snd_soc_read(codec, WM8903_WRITE_SEQUENCER_0);
 	reg[0] |= WM8903_WSEQ_ENA;
-	wm8903_write(codec, WM8903_WRITE_SEQUENCER_0, reg[0]);
+	snd_soc_write(codec, WM8903_WRITE_SEQUENCER_0, reg[0]);
 
 	dev_dbg(&i2c->dev, "Starting sequence at %d\n", start);
 
-	wm8903_write(codec, WM8903_WRITE_SEQUENCER_3,
+	snd_soc_write(codec, WM8903_WRITE_SEQUENCER_3,
 		     start | WM8903_WSEQ_START);
 
 	/* Wait for it to complete.  If we have the interrupt wired up then
@@ -339,13 +263,13 @@ static int wm8903_run_sequence(struct snd_soc_codec *codec, unsigned int start)
 	do {
 		msleep(10);
 
-		reg[4] = wm8903_read(codec, WM8903_WRITE_SEQUENCER_4);
+		reg[4] = snd_soc_read(codec, WM8903_WRITE_SEQUENCER_4);
 	} while (reg[4] & WM8903_WSEQ_BUSY);
 
 	dev_dbg(&i2c->dev, "Sequence complete\n");
 
 	/* Disable the sequencer again */
-	wm8903_write(codec, WM8903_WRITE_SEQUENCER_0,
+	snd_soc_write(codec, WM8903_WRITE_SEQUENCER_0,
 		     reg[0] & ~WM8903_WSEQ_ENA);
 
 	return 0;
@@ -357,12 +281,12 @@ static void wm8903_sync_reg_cache(struct snd_soc_codec *codec, u16 *cache)
 
 	/* There really ought to be something better we can do here :/ */
 	for (i = 0; i < ARRAY_SIZE(wm8903_reg_defaults); i++)
-		cache[i] = wm8903_hw_read(codec, i);
+		cache[i] = codec->hw_read(codec, i);
 }
 
 static void wm8903_reset(struct snd_soc_codec *codec)
 {
-	wm8903_write(codec, WM8903_SW_RESET_AND_ID, 0);
+	snd_soc_write(codec, WM8903_SW_RESET_AND_ID, 0);
 	memcpy(codec->reg_cache, wm8903_reg_defaults,
 	       sizeof(wm8903_reg_defaults));
 }
@@ -423,52 +347,52 @@ static int wm8903_output_event(struct snd_soc_dapm_widget *w,
 	}
 
 	if (event & SND_SOC_DAPM_PRE_PMU) {
-		val = wm8903_read(codec, reg);
+		val = snd_soc_read(codec, reg);
 
 		/* Short the output */
 		val &= ~(WM8903_OUTPUT_SHORT << shift);
-		wm8903_write(codec, reg, val);
+		snd_soc_write(codec, reg, val);
 	}
 
 	if (event & SND_SOC_DAPM_POST_PMU) {
-		val = wm8903_read(codec, reg);
+		val = snd_soc_read(codec, reg);
 
 		val |= (WM8903_OUTPUT_IN << shift);
-		wm8903_write(codec, reg, val);
+		snd_soc_write(codec, reg, val);
 
 		val |= (WM8903_OUTPUT_INT << shift);
-		wm8903_write(codec, reg, val);
+		snd_soc_write(codec, reg, val);
 
 		/* Turn on the output ENA_OUTP */
 		val |= (WM8903_OUTPUT_OUT << shift);
-		wm8903_write(codec, reg, val);
+		snd_soc_write(codec, reg, val);
 
 		/* Enable the DC servo */
-		dcs_reg = wm8903_read(codec, WM8903_DC_SERVO_0);
+		dcs_reg = snd_soc_read(codec, WM8903_DC_SERVO_0);
 		dcs_reg |= dcs_bit;
-		wm8903_write(codec, WM8903_DC_SERVO_0, dcs_reg);
+		snd_soc_write(codec, WM8903_DC_SERVO_0, dcs_reg);
 
 		/* Remove the short */
 		val |= (WM8903_OUTPUT_SHORT << shift);
-		wm8903_write(codec, reg, val);
+		snd_soc_write(codec, reg, val);
 	}
 
 	if (event & SND_SOC_DAPM_PRE_PMD) {
-		val = wm8903_read(codec, reg);
+		val = snd_soc_read(codec, reg);
 
 		/* Short the output */
 		val &= ~(WM8903_OUTPUT_SHORT << shift);
-		wm8903_write(codec, reg, val);
+		snd_soc_write(codec, reg, val);
 
 		/* Disable the DC servo */
-		dcs_reg = wm8903_read(codec, WM8903_DC_SERVO_0);
+		dcs_reg = snd_soc_read(codec, WM8903_DC_SERVO_0);
 		dcs_reg &= ~dcs_bit;
-		wm8903_write(codec, WM8903_DC_SERVO_0, dcs_reg);
+		snd_soc_write(codec, WM8903_DC_SERVO_0, dcs_reg);
 
 		/* Then disable the intermediate and output stages */
 		val &= ~((WM8903_OUTPUT_OUT | WM8903_OUTPUT_INT |
 			  WM8903_OUTPUT_IN) << shift);
-		wm8903_write(codec, reg, val);
+		snd_soc_write(codec, reg, val);
 	}
 
 	return 0;
@@ -492,13 +416,13 @@ static int wm8903_class_w_put(struct snd_kcontrol *kcontrol,
 	u16 reg;
 	int ret;
 
-	reg = wm8903_read(codec, WM8903_CLASS_W_0);
+	reg = snd_soc_read(codec, WM8903_CLASS_W_0);
 
 	/* Turn it off if we're about to enable bypass */
 	if (ucontrol->value.integer.value[0]) {
 		if (wm8903->class_w_users == 0) {
 			dev_dbg(&i2c->dev, "Disabling Class W\n");
-			wm8903_write(codec, WM8903_CLASS_W_0, reg &
+			snd_soc_write(codec, WM8903_CLASS_W_0, reg &
 				     ~(WM8903_CP_DYN_FREQ | WM8903_CP_DYN_V));
 		}
 		wm8903->class_w_users++;
@@ -511,7 +435,7 @@ static int wm8903_class_w_put(struct snd_kcontrol *kcontrol,
 	if (!ucontrol->value.integer.value[0]) {
 		if (wm8903->class_w_users == 1) {
 			dev_dbg(&i2c->dev, "Enabling Class W\n");
-			wm8903_write(codec, WM8903_CLASS_W_0, reg |
+			snd_soc_write(codec, WM8903_CLASS_W_0, reg |
 				     WM8903_CP_DYN_FREQ | WM8903_CP_DYN_V);
 		}
 		wm8903->class_w_users--;
@@ -1009,55 +933,55 @@ static int wm8903_set_bias_level(struct snd_soc_codec *codec,
 	switch (level) {
 	case SND_SOC_BIAS_ON:
 	case SND_SOC_BIAS_PREPARE:
-		reg = wm8903_read(codec, WM8903_VMID_CONTROL_0);
+		reg = snd_soc_read(codec, WM8903_VMID_CONTROL_0);
 		reg &= ~(WM8903_VMID_RES_MASK);
 		reg |= WM8903_VMID_RES_50K;
-		wm8903_write(codec, WM8903_VMID_CONTROL_0, reg);
+		snd_soc_write(codec, WM8903_VMID_CONTROL_0, reg);
 		break;
 
 	case SND_SOC_BIAS_STANDBY:
 		if (codec->bias_level == SND_SOC_BIAS_OFF) {
-			wm8903_write(codec, WM8903_CLOCK_RATES_2,
+			snd_soc_write(codec, WM8903_CLOCK_RATES_2,
 				     WM8903_CLK_SYS_ENA);
 
 			/* Change DC servo dither level in startup sequence */
-			wm8903_write(codec, WM8903_WRITE_SEQUENCER_0, 0x11);
-			wm8903_write(codec, WM8903_WRITE_SEQUENCER_1, 0x1257);
-			wm8903_write(codec, WM8903_WRITE_SEQUENCER_2, 0x2);
+			snd_soc_write(codec, WM8903_WRITE_SEQUENCER_0, 0x11);
+			snd_soc_write(codec, WM8903_WRITE_SEQUENCER_1, 0x1257);
+			snd_soc_write(codec, WM8903_WRITE_SEQUENCER_2, 0x2);
 
 			wm8903_run_sequence(codec, 0);
 			wm8903_sync_reg_cache(codec, codec->reg_cache);
 
 			/* Enable low impedence charge pump output */
-			reg = wm8903_read(codec,
+			reg = snd_soc_read(codec,
 					  WM8903_CONTROL_INTERFACE_TEST_1);
-			wm8903_write(codec, WM8903_CONTROL_INTERFACE_TEST_1,
+			snd_soc_write(codec, WM8903_CONTROL_INTERFACE_TEST_1,
 				     reg | WM8903_TEST_KEY);
-			reg2 = wm8903_read(codec, WM8903_CHARGE_PUMP_TEST_1);
-			wm8903_write(codec, WM8903_CHARGE_PUMP_TEST_1,
+			reg2 = snd_soc_read(codec, WM8903_CHARGE_PUMP_TEST_1);
+			snd_soc_write(codec, WM8903_CHARGE_PUMP_TEST_1,
 				     reg2 | WM8903_CP_SW_KELVIN_MODE_MASK);
-			wm8903_write(codec, WM8903_CONTROL_INTERFACE_TEST_1,
+			snd_soc_write(codec, WM8903_CONTROL_INTERFACE_TEST_1,
 				     reg);
 
 			/* By default no bypass paths are enabled so
 			 * enable Class W support.
 			 */
 			dev_dbg(&i2c->dev, "Enabling Class W\n");
-			wm8903_write(codec, WM8903_CLASS_W_0, reg |
+			snd_soc_write(codec, WM8903_CLASS_W_0, reg |
 				     WM8903_CP_DYN_FREQ | WM8903_CP_DYN_V);
 		}
 
-		reg = wm8903_read(codec, WM8903_VMID_CONTROL_0);
+		reg = snd_soc_read(codec, WM8903_VMID_CONTROL_0);
 		reg &= ~(WM8903_VMID_RES_MASK);
 		reg |= WM8903_VMID_RES_250K;
-		wm8903_write(codec, WM8903_VMID_CONTROL_0, reg);
+		snd_soc_write(codec, WM8903_VMID_CONTROL_0, reg);
 		break;
 
 	case SND_SOC_BIAS_OFF:
 		wm8903_run_sequence(codec, 32);
-		reg = wm8903_read(codec, WM8903_CLOCK_RATES_2);
+		reg = snd_soc_read(codec, WM8903_CLOCK_RATES_2);
 		reg &= ~WM8903_CLK_SYS_ENA;
-		wm8903_write(codec, WM8903_CLOCK_RATES_2, reg);
+		snd_soc_write(codec, WM8903_CLOCK_RATES_2, reg);
 		break;
 	}
 
@@ -1081,7 +1005,7 @@ static int wm8903_set_dai_fmt(struct snd_soc_dai *codec_dai,
 			      unsigned int fmt)
 {
 	struct snd_soc_codec *codec = codec_dai->codec;
-	u16 aif1 = wm8903_read(codec, WM8903_AUDIO_INTERFACE_1);
+	u16 aif1 = snd_soc_read(codec, WM8903_AUDIO_INTERFACE_1);
 
 	aif1 &= ~(WM8903_LRCLK_DIR | WM8903_BCLK_DIR | WM8903_AIF_FMT_MASK |
 		  WM8903_AIF_LRCLK_INV | WM8903_AIF_BCLK_INV);
@@ -1159,7 +1083,7 @@ static int wm8903_set_dai_fmt(struct snd_soc_dai *codec_dai,
 		return -EINVAL;
 	}
 
-	wm8903_write(codec, WM8903_AUDIO_INTERFACE_1, aif1);
+	snd_soc_write(codec, WM8903_AUDIO_INTERFACE_1, aif1);
 
 	return 0;
 }
@@ -1169,14 +1093,14 @@ static int wm8903_digital_mute(struct snd_soc_dai *codec_dai, int mute)
 	struct snd_soc_codec *codec = codec_dai->codec;
 	u16 reg;
 
-	reg = wm8903_read(codec, WM8903_DAC_DIGITAL_1);
+	reg = snd_soc_read(codec, WM8903_DAC_DIGITAL_1);
 
 	if (mute)
 		reg |= WM8903_DAC_MUTE;
 	else
 		reg &= ~WM8903_DAC_MUTE;
 
-	wm8903_write(codec, WM8903_DAC_DIGITAL_1, reg);
+	snd_soc_write(codec, WM8903_DAC_DIGITAL_1, reg);
 
 	return 0;
 }
@@ -1366,12 +1290,12 @@ static int wm8903_hw_params(struct snd_pcm_substream *substream,
 	int cur_val;
 	int clk_sys;
 
-	u16 aif1 = wm8903_read(codec, WM8903_AUDIO_INTERFACE_1);
-	u16 aif2 = wm8903_read(codec, WM8903_AUDIO_INTERFACE_2);
-	u16 aif3 = wm8903_read(codec, WM8903_AUDIO_INTERFACE_3);
-	u16 clock0 = wm8903_read(codec, WM8903_CLOCK_RATES_0);
-	u16 clock1 = wm8903_read(codec, WM8903_CLOCK_RATES_1);
-	u16 dac_digital1 = wm8903_read(codec, WM8903_DAC_DIGITAL_1);
+	u16 aif1 = snd_soc_read(codec, WM8903_AUDIO_INTERFACE_1);
+	u16 aif2 = snd_soc_read(codec, WM8903_AUDIO_INTERFACE_2);
+	u16 aif3 = snd_soc_read(codec, WM8903_AUDIO_INTERFACE_3);
+	u16 clock0 = snd_soc_read(codec, WM8903_CLOCK_RATES_0);
+	u16 clock1 = snd_soc_read(codec, WM8903_CLOCK_RATES_1);
+	u16 dac_digital1 = snd_soc_read(codec, WM8903_DAC_DIGITAL_1);
 
 	if (substream == wm8903->slave_substream) {
 		dev_dbg(&i2c->dev, "Ignoring hw_params for slave substream\n");
@@ -1503,12 +1427,12 @@ static int wm8903_hw_params(struct snd_pcm_substream *substream,
 	aif2 |= bclk_divs[bclk_div].div;
 	aif3 |= bclk / fs;
 
-	wm8903_write(codec, WM8903_CLOCK_RATES_0, clock0);
-	wm8903_write(codec, WM8903_CLOCK_RATES_1, clock1);
-	wm8903_write(codec, WM8903_AUDIO_INTERFACE_1, aif1);
-	wm8903_write(codec, WM8903_AUDIO_INTERFACE_2, aif2);
-	wm8903_write(codec, WM8903_AUDIO_INTERFACE_3, aif3);
-	wm8903_write(codec, WM8903_DAC_DIGITAL_1, dac_digital1);
+	snd_soc_write(codec, WM8903_CLOCK_RATES_0, clock0);
+	snd_soc_write(codec, WM8903_CLOCK_RATES_1, clock1);
+	snd_soc_write(codec, WM8903_AUDIO_INTERFACE_1, aif1);
+	snd_soc_write(codec, WM8903_AUDIO_INTERFACE_2, aif2);
+	snd_soc_write(codec, WM8903_AUDIO_INTERFACE_3, aif3);
+	snd_soc_write(codec, WM8903_DAC_DIGITAL_1, dac_digital1);
 
 	return 0;
 }
@@ -1593,7 +1517,7 @@ static int wm8903_resume(struct platform_device *pdev)
 	if (tmp_cache) {
 		for (i = 2; i < ARRAY_SIZE(wm8903_reg_defaults); i++)
 			if (tmp_cache[i] != reg_cache[i])
-				wm8903_write(codec, i, tmp_cache[i]);
+				snd_soc_write(codec, i, tmp_cache[i]);
 	} else {
 		dev_err(&i2c->dev, "Failed to allocate temporary cache\n");
 	}
@@ -1624,9 +1548,6 @@ static __devinit int wm8903_i2c_probe(struct i2c_client *i2c,
 	codec->dev = &i2c->dev;
 	codec->name = "WM8903";
 	codec->owner = THIS_MODULE;
-	codec->read = wm8903_read;
-	codec->write = wm8903_write;
-	codec->hw_write = (hw_write_t)i2c_master_send;
 	codec->bias_level = SND_SOC_BIAS_OFF;
 	codec->set_bias_level = wm8903_set_bias_level;
 	codec->dai = &wm8903_dai;
@@ -1634,18 +1555,25 @@ static __devinit int wm8903_i2c_probe(struct i2c_client *i2c,
 	codec->reg_cache_size = ARRAY_SIZE(wm8903->reg_cache);
 	codec->reg_cache = &wm8903->reg_cache[0];
 	codec->private_data = wm8903;
+	codec->volatile_register = wm8903_volatile_register;
 
 	i2c_set_clientdata(i2c, codec);
 	codec->control_data = i2c;
 
-	val = wm8903_hw_read(codec, WM8903_SW_RESET_AND_ID);
+	ret = snd_soc_codec_set_cache_io(codec, 8, 16, SND_SOC_I2C);
+	if (ret != 0) {
+		dev_err(&i2c->dev, "Failed to set cache I/O: %d\n", ret);
+		goto err;
+	}
+
+	val = snd_soc_read(codec, WM8903_SW_RESET_AND_ID);
 	if (val != wm8903_reg_defaults[WM8903_SW_RESET_AND_ID]) {
 		dev_err(&i2c->dev,
 			"Device with ID register %x is not a WM8903\n", val);
 		return -ENODEV;
 	}
 
-	val = wm8903_read(codec, WM8903_REVISION_NUMBER);
+	val = snd_soc_read(codec, WM8903_REVISION_NUMBER);
 	dev_info(&i2c->dev, "WM8903 revision %d\n",
 		 val & WM8903_CHIP_REV_MASK);
 
@@ -1655,35 +1583,35 @@ static __devinit int wm8903_i2c_probe(struct i2c_client *i2c,
 	wm8903_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 
 	/* Latch volume update bits */
-	val = wm8903_read(codec, WM8903_ADC_DIGITAL_VOLUME_LEFT);
+	val = snd_soc_read(codec, WM8903_ADC_DIGITAL_VOLUME_LEFT);
 	val |= WM8903_ADCVU;
-	wm8903_write(codec, WM8903_ADC_DIGITAL_VOLUME_LEFT, val);
-	wm8903_write(codec, WM8903_ADC_DIGITAL_VOLUME_RIGHT, val);
+	snd_soc_write(codec, WM8903_ADC_DIGITAL_VOLUME_LEFT, val);
+	snd_soc_write(codec, WM8903_ADC_DIGITAL_VOLUME_RIGHT, val);
 
-	val = wm8903_read(codec, WM8903_DAC_DIGITAL_VOLUME_LEFT);
+	val = snd_soc_read(codec, WM8903_DAC_DIGITAL_VOLUME_LEFT);
 	val |= WM8903_DACVU;
-	wm8903_write(codec, WM8903_DAC_DIGITAL_VOLUME_LEFT, val);
-	wm8903_write(codec, WM8903_DAC_DIGITAL_VOLUME_RIGHT, val);
+	snd_soc_write(codec, WM8903_DAC_DIGITAL_VOLUME_LEFT, val);
+	snd_soc_write(codec, WM8903_DAC_DIGITAL_VOLUME_RIGHT, val);
 
-	val = wm8903_read(codec, WM8903_ANALOGUE_OUT1_LEFT);
+	val = snd_soc_read(codec, WM8903_ANALOGUE_OUT1_LEFT);
 	val |= WM8903_HPOUTVU;
-	wm8903_write(codec, WM8903_ANALOGUE_OUT1_LEFT, val);
-	wm8903_write(codec, WM8903_ANALOGUE_OUT1_RIGHT, val);
+	snd_soc_write(codec, WM8903_ANALOGUE_OUT1_LEFT, val);
+	snd_soc_write(codec, WM8903_ANALOGUE_OUT1_RIGHT, val);
 
-	val = wm8903_read(codec, WM8903_ANALOGUE_OUT2_LEFT);
+	val = snd_soc_read(codec, WM8903_ANALOGUE_OUT2_LEFT);
 	val |= WM8903_LINEOUTVU;
-	wm8903_write(codec, WM8903_ANALOGUE_OUT2_LEFT, val);
-	wm8903_write(codec, WM8903_ANALOGUE_OUT2_RIGHT, val);
+	snd_soc_write(codec, WM8903_ANALOGUE_OUT2_LEFT, val);
+	snd_soc_write(codec, WM8903_ANALOGUE_OUT2_RIGHT, val);
 
-	val = wm8903_read(codec, WM8903_ANALOGUE_OUT3_LEFT);
+	val = snd_soc_read(codec, WM8903_ANALOGUE_OUT3_LEFT);
 	val |= WM8903_SPKVU;
-	wm8903_write(codec, WM8903_ANALOGUE_OUT3_LEFT, val);
-	wm8903_write(codec, WM8903_ANALOGUE_OUT3_RIGHT, val);
+	snd_soc_write(codec, WM8903_ANALOGUE_OUT3_LEFT, val);
+	snd_soc_write(codec, WM8903_ANALOGUE_OUT3_RIGHT, val);
 
 	/* Enable DAC soft mute by default */
-	val = wm8903_read(codec, WM8903_DAC_DIGITAL_1);
+	val = snd_soc_read(codec, WM8903_DAC_DIGITAL_1);
 	val |= WM8903_DAC_MUTEMODE;
-	wm8903_write(codec, WM8903_DAC_DIGITAL_1, val);
+	snd_soc_write(codec, WM8903_DAC_DIGITAL_1, val);
 
 	wm8903_dai.dev = &i2c->dev;
 	wm8903_codec = codec;