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Push WM8994 register cache down into mfd

PATCH New Mark Brown 1 participant 4 messages Nov 28, 2011

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Sound ASoC Wolfson microelectronics drivers
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Mark Brown

author
#0 lore raw

cover Push WM8994 register cache down into mfd

These patches build on a series I just posted to the linux-kernel list which use the regmap API to provide a single unified register cache over wm8994 devices. With those patches the ASoC register cache for the driver becomes redundant and we may as well delete it saving us a bunch of memory, image size and code complexity as well as giving us a nice diffstat.

The diffstat below is for the whole series, I'm only posting the three ASoC patches here.

The following changes since commit caca6a03d365883564885f2c1da3e88dcf65d139:

Linux 3.2-rc3 (2011-11-23 20:20:28 -0800)

are available in the git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git topic/wm8994

Mark Brown (14):
regmap: Track if the register cache is dirty and suppress unneeded syncs
regmap: Rename LZO cache type to compressed
mfd: Remove some unused functions in wm8894-irq
mfd: Add basic device tree binding for wm8994
mfd: Convert wm8994 to devm_kzalloc()
mfd: Disable more pulls on WM8994
mfd: Don't hard code the reset value for WM8994 devices
mfd: Define some additional wm8994 registers
mfd: Add wm8994 register access and default information
Merge branch 'topic/cache' of git://git.kernel.org/.../broonie/regmap into HEAD
mfd: Enable register cache for wm8994 devices
ASoC: Don't use control_data to get struct wm8994
ASoC: Remove ASoC-specific WM8994 I/O code
ASoC: Remove WM8994 register cache

 Documentation/devicetree/bindings/sound/wm8994.txt |   18 +
 drivers/base/regmap/internal.h                     |    1 +
 drivers/base/regmap/regcache-lzo.c                 |    2 +-
 drivers/base/regmap/regcache.c                     |   19 +
 drivers/base/regmap/regmap.c                       |    4 +-
 drivers/mfd/Makefile                               |    2 +-
 drivers/mfd/wm8994-core.c                          |  121 +-
 drivers/mfd/wm8994-irq.c                           |   10 -
 drivers/mfd/wm8994-regmap.c                        | 1218 ++++++++
 drivers/mfd/wm8994.h                               |   24 +
 include/linux/mfd/wm8994/core.h                    |    2 -
 include/linux/mfd/wm8994/pdata.h                   |    6 +
 include/linux/mfd/wm8994/registers.h               |   96 +
 include/linux/regmap.h                             |    3 +-
 sound/soc/codecs/Makefile                          |    2 +-
 sound/soc/codecs/wm8994-tables.c                   | 3147 --------------------
 sound/soc/codecs/wm8994.c                          |  216 +--
 sound/soc/codecs/wm8994.h                          |   15 +-
 18 files changed, 1494 insertions(+), 3412 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/sound/wm8994.txt
 create mode 100644 drivers/mfd/wm8994-regmap.c
 create mode 100644 drivers/mfd/wm8994.h
 delete mode 100644 sound/soc/codecs/wm8994-tables.c
author
#1 lore raw

PATCH 1/3 ASoC: Don't use control_data to get struct wm8994

This will support refactoring to make use of the regmap API more directly in the core.

Signed-off-by Mark Brown <[email protected]>
---
 sound/soc/codecs/wm8994.c |   72 +++++++++++++++++++++++---------------------
 sound/soc/codecs/wm8994.h |    5 ++-
 2 files changed, 41 insertions(+), 36 deletions(-)
sound/soc/codecs/wm8994.c +38 -34
index 9c982e4..eb0020f 100644
@@ -56,7 +56,7 @@ static int wm8994_retune_mobile_base[] = {
 static int wm8994_readable(struct snd_soc_codec *codec, unsigned int reg)
 {
 	struct wm8994_priv *wm8994 = snd_soc_codec_get_drvdata(codec);
-	struct wm8994 *control = codec->control_data;
+	struct wm8994 *control = wm8994->wm8994;
 
 	switch (reg) {
 	case WM8994_GPIO_1:

@@ -1768,7 +1768,7 @@ static int _wm8994_set_fll(struct snd_soc_codec *codec, int id, int src,
 			  unsigned int freq_in, unsigned int freq_out)
 {
 	struct wm8994_priv *wm8994 = snd_soc_codec_get_drvdata(codec);
-	struct wm8994 *control = codec->control_data;
+	struct wm8994 *control = wm8994->wm8994;
 	int reg_offset, ret;
 	struct fll_div fll;
 	u16 reg, aif1, aif2;

@@ -2017,8 +2017,8 @@ static int wm8994_set_dai_sysclk(struct snd_soc_dai *dai,
 static int wm8994_set_bias_level(struct snd_soc_codec *codec,
 				 enum snd_soc_bias_level level)
 {
-	struct wm8994 *control = codec->control_data;
 	struct wm8994_priv *wm8994 = snd_soc_codec_get_drvdata(codec);
+	struct wm8994 *control = wm8994->wm8994;
 
 	switch (level) {
 	case SND_SOC_BIAS_ON:

@@ -2095,7 +2095,8 @@ static int wm8994_set_bias_level(struct snd_soc_codec *codec,
 static int wm8994_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 {
 	struct snd_soc_codec *codec = dai->codec;
-	struct wm8994 *control = codec->control_data;
+	struct wm8994_priv *wm8994 = snd_soc_codec_get_drvdata(codec);
+	struct wm8994 *control = wm8994->wm8994;
 	int ms_reg;
 	int aif1_reg;
 	int ms = 0;

@@ -2390,7 +2391,8 @@ static int wm8994_aif3_hw_params(struct snd_pcm_substream *substream,
 				 struct snd_soc_dai *dai)
 {
 	struct snd_soc_codec *codec = dai->codec;
-	struct wm8994 *control = codec->control_data;
+	struct wm8994_priv *wm8994 = snd_soc_codec_get_drvdata(codec);
+	struct wm8994 *control = wm8994->wm8994;
 	int aif1_reg;
 	int aif1 = 0;
 

@@ -2621,7 +2623,7 @@ static struct snd_soc_dai_driver wm8994_dai[] = {
 static int wm8994_suspend(struct snd_soc_codec *codec, pm_message_t state)
 {
 	struct wm8994_priv *wm8994 = snd_soc_codec_get_drvdata(codec);
-	struct wm8994 *control = codec->control_data;
+	struct wm8994 *control = wm8994->wm8994;
 	int i, ret;
 
 	switch (control->type) {

@@ -2652,7 +2654,7 @@ static int wm8994_suspend(struct snd_soc_codec *codec, pm_message_t state)
 static int wm8994_resume(struct snd_soc_codec *codec)
 {
 	struct wm8994_priv *wm8994 = snd_soc_codec_get_drvdata(codec);
-	struct wm8994 *control = codec->control_data;
+	struct wm8994 *control = wm8994->wm8994;
 	int i, ret;
 	unsigned int val, mask;
 

@@ -2874,7 +2876,7 @@ int wm8994_mic_detect(struct snd_soc_codec *codec, struct snd_soc_jack *jack,
 {
 	struct wm8994_priv *wm8994 = snd_soc_codec_get_drvdata(codec);
 	struct wm8994_micdet *micdet;
-	struct wm8994 *control = codec->control_data;
+	struct wm8994 *control = wm8994->wm8994;
 	int reg;
 
 	if (control->type != WM8994)

@@ -2994,7 +2996,7 @@ int wm8958_mic_detect(struct snd_soc_codec *codec, struct snd_soc_jack *jack,
 		      wm8958_micdet_cb cb, void *cb_data)
 {
 	struct wm8994_priv *wm8994 = snd_soc_codec_get_drvdata(codec);
-	struct wm8994 *control = codec->control_data;
+	struct wm8994 *control = wm8994->wm8994;
 
 	switch (control->type) {
 	case WM1811:

@@ -3114,6 +3116,8 @@ static int wm8994_codec_probe(struct snd_soc_codec *codec)
 		return -ENOMEM;
 	snd_soc_codec_set_drvdata(codec, wm8994);
 
+
+	wm8994->wm8994 = dev_get_drvdata(codec->dev->parent);
 	wm8994->pdata = dev_get_platdata(codec->dev->parent);
 	wm8994->codec = codec;
 

@@ -3193,14 +3197,14 @@ static int wm8994_codec_probe(struct snd_soc_codec *codec)
 		break;
 	}
 
-	wm8994_request_irq(codec->control_data, WM8994_IRQ_FIFOS_ERR,
+	wm8994_request_irq(wm8994->wm8994, WM8994_IRQ_FIFOS_ERR,
 			   wm8994_fifo_error, "FIFO error", codec);
-	wm8994_request_irq(codec->control_data, WM8994_IRQ_TEMP_WARN,
+	wm8994_request_irq(wm8994->wm8994, WM8994_IRQ_TEMP_WARN,
 			   wm8994_temp_warn, "Thermal warning", codec);
-	wm8994_request_irq(codec->control_data, WM8994_IRQ_TEMP_SHUT,
+	wm8994_request_irq(wm8994->wm8994, WM8994_IRQ_TEMP_SHUT,
 			   wm8994_temp_shut, "Thermal shutdown", codec);
 
-	ret = wm8994_request_irq(codec->control_data, WM8994_IRQ_DCS_DONE,
+	ret = wm8994_request_irq(wm8994->wm8994, WM8994_IRQ_DCS_DONE,
 				 wm_hubs_dcs_done, "DC servo done",
 				 &wm8994->hubs);
 	if (ret == 0)

@@ -3220,7 +3224,7 @@ static int wm8994_codec_probe(struct snd_soc_codec *codec)
 					 ret);
 		}
 
-		ret = wm8994_request_irq(codec->control_data,
+		ret = wm8994_request_irq(wm8994->wm8994,
 					 WM8994_IRQ_MIC1_SHRT,
 					 wm8994_mic_irq, "Mic 1 short",
 					 wm8994);

@@ -3229,7 +3233,7 @@ static int wm8994_codec_probe(struct snd_soc_codec *codec)
 				 "Failed to request Mic1 short IRQ: %d\n",
 				 ret);
 
-		ret = wm8994_request_irq(codec->control_data,
+		ret = wm8994_request_irq(wm8994->wm8994,
 					 WM8994_IRQ_MIC2_DET,
 					 wm8994_mic_irq, "Mic 2 detect",
 					 wm8994);

@@ -3238,7 +3242,7 @@ static int wm8994_codec_probe(struct snd_soc_codec *codec)
 				 "Failed to request Mic2 detect IRQ: %d\n",
 				 ret);
 
-		ret = wm8994_request_irq(codec->control_data,
+		ret = wm8994_request_irq(wm8994->wm8994,
 					 WM8994_IRQ_MIC2_SHRT,
 					 wm8994_mic_irq, "Mic 2 short",
 					 wm8994);

@@ -3265,7 +3269,7 @@ static int wm8994_codec_probe(struct snd_soc_codec *codec)
 
 	wm8994->fll_locked_irq = true;
 	for (i = 0; i < ARRAY_SIZE(wm8994->fll_locked); i++) {
-		ret = wm8994_request_irq(codec->control_data,
+		ret = wm8994_request_irq(wm8994->wm8994,
 					 WM8994_IRQ_FLL1_LOCK + i,
 					 wm8994_fll_locked_irq, "FLL lock",
 					 &wm8994->fll_locked[i]);

@@ -3472,19 +3476,19 @@ static int wm8994_codec_probe(struct snd_soc_codec *codec)
 	return 0;
 
 err_irq:
-	wm8994_free_irq(codec->control_data, WM8994_IRQ_MIC2_SHRT, wm8994);
-	wm8994_free_irq(codec->control_data, WM8994_IRQ_MIC2_DET, wm8994);
-	wm8994_free_irq(codec->control_data, WM8994_IRQ_MIC1_SHRT, wm8994);
+	wm8994_free_irq(wm8994->wm8994, WM8994_IRQ_MIC2_SHRT, wm8994);
+	wm8994_free_irq(wm8994->wm8994, WM8994_IRQ_MIC2_DET, wm8994);
+	wm8994_free_irq(wm8994->wm8994, WM8994_IRQ_MIC1_SHRT, wm8994);
 	if (wm8994->micdet_irq)
 		free_irq(wm8994->micdet_irq, wm8994);
 	for (i = 0; i < ARRAY_SIZE(wm8994->fll_locked); i++)
-		wm8994_free_irq(codec->control_data, WM8994_IRQ_FLL1_LOCK + i,
+		wm8994_free_irq(wm8994->wm8994, WM8994_IRQ_FLL1_LOCK + i,
 				&wm8994->fll_locked[i]);
-	wm8994_free_irq(codec->control_data, WM8994_IRQ_DCS_DONE,
+	wm8994_free_irq(wm8994->wm8994, WM8994_IRQ_DCS_DONE,
 			&wm8994->hubs);
-	wm8994_free_irq(codec->control_data, WM8994_IRQ_FIFOS_ERR, codec);
-	wm8994_free_irq(codec->control_data, WM8994_IRQ_TEMP_SHUT, codec);
-	wm8994_free_irq(codec->control_data, WM8994_IRQ_TEMP_WARN, codec);
+	wm8994_free_irq(wm8994->wm8994, WM8994_IRQ_FIFOS_ERR, codec);
+	wm8994_free_irq(wm8994->wm8994, WM8994_IRQ_TEMP_SHUT, codec);
+	wm8994_free_irq(wm8994->wm8994, WM8994_IRQ_TEMP_WARN, codec);
 err:
 	kfree(wm8994);
 	return ret;

@@ -3493,7 +3497,7 @@ err:
 static int  wm8994_codec_remove(struct snd_soc_codec *codec)
 {
 	struct wm8994_priv *wm8994 = snd_soc_codec_get_drvdata(codec);
-	struct wm8994 *control = codec->control_data;
+	struct wm8994 *control = wm8994->wm8994;
 	int i;
 
 	wm8994_set_bias_level(codec, SND_SOC_BIAS_OFF);

@@ -3501,24 +3505,24 @@ static int  wm8994_codec_remove(struct snd_soc_codec *codec)
 	pm_runtime_disable(codec->dev);
 
 	for (i = 0; i < ARRAY_SIZE(wm8994->fll_locked); i++)
-		wm8994_free_irq(codec->control_data, WM8994_IRQ_FLL1_LOCK + i,
+		wm8994_free_irq(wm8994->wm8994, WM8994_IRQ_FLL1_LOCK + i,
 				&wm8994->fll_locked[i]);
 
-	wm8994_free_irq(codec->control_data, WM8994_IRQ_DCS_DONE,
+	wm8994_free_irq(wm8994->wm8994, WM8994_IRQ_DCS_DONE,
 			&wm8994->hubs);
-	wm8994_free_irq(codec->control_data, WM8994_IRQ_FIFOS_ERR, codec);
-	wm8994_free_irq(codec->control_data, WM8994_IRQ_TEMP_SHUT, codec);
-	wm8994_free_irq(codec->control_data, WM8994_IRQ_TEMP_WARN, codec);
+	wm8994_free_irq(wm8994->wm8994, WM8994_IRQ_FIFOS_ERR, codec);
+	wm8994_free_irq(wm8994->wm8994, WM8994_IRQ_TEMP_SHUT, codec);
+	wm8994_free_irq(wm8994->wm8994, WM8994_IRQ_TEMP_WARN, codec);
 
 	switch (control->type) {
 	case WM8994:
 		if (wm8994->micdet_irq)
 			free_irq(wm8994->micdet_irq, wm8994);
-		wm8994_free_irq(codec->control_data, WM8994_IRQ_MIC2_DET,
+		wm8994_free_irq(wm8994->wm8994, WM8994_IRQ_MIC2_DET,
 				wm8994);
-		wm8994_free_irq(codec->control_data, WM8994_IRQ_MIC1_SHRT,
+		wm8994_free_irq(wm8994->wm8994, WM8994_IRQ_MIC1_SHRT,
 				wm8994);
-		wm8994_free_irq(codec->control_data, WM8994_IRQ_MIC1_DET,
+		wm8994_free_irq(wm8994->wm8994, WM8994_IRQ_MIC1_DET,
 				wm8994);
 		break;
sound/soc/codecs/wm8994.h +3 -2
index f4f1355..09538f6 100644
@@ -70,10 +70,11 @@ struct wm8994_fll_config {
 #define WM8994_NUM_DRC 3
 #define WM8994_NUM_EQ  3
 
+struct wm8994;
+
 struct wm8994_priv {
 	struct wm_hubs_data hubs;
-	enum snd_soc_control_type control_type;
-	void *control_data;
+	struct wm8994 *wm8994;
 	struct snd_soc_codec *codec;
 	int sysclk[2];
 	int sysclk_rate[2];
Signature · 1 line
1.7.7.3
author
#2 lore raw

PATCH 2/3 ASoC: Remove ASoC-specific WM8994 I/O code

Just go directly to the regmap API, saving code and making integration that bit more direct.

Signed-off-by Mark Brown <[email protected]>
---
 sound/soc/codecs/wm8994.c |   63 ++++++++------------------------------------
 1 files changed, 12 insertions(+), 51 deletions(-)
sound/soc/codecs/wm8994.c +12 -51
index eb0020f..813ec28 100644
@@ -114,44 +114,6 @@ static int wm8994_volatile(struct snd_soc_codec *codec, unsigned int reg)
 	}
 }
 
-static int wm8994_write(struct snd_soc_codec *codec, unsigned int reg,
-	unsigned int value)
-{
-	int ret;
-
-	BUG_ON(reg > WM8994_MAX_REGISTER);
-
-	if (!wm8994_volatile(codec, reg)) {
-		ret = snd_soc_cache_write(codec, reg, value);
-		if (ret != 0)
-			dev_err(codec->dev, "Cache write to %x failed: %d\n",
-				reg, ret);
-	}
-
-	return wm8994_reg_write(codec->control_data, reg, value);
-}
-
-static unsigned int wm8994_read(struct snd_soc_codec *codec,
-				unsigned int reg)
-{
-	unsigned int val;
-	int ret;
-
-	BUG_ON(reg > WM8994_MAX_REGISTER);
-
-	if (!wm8994_volatile(codec, reg) && wm8994_readable(codec, reg) &&
-	    reg < codec->driver->reg_cache_size) {
-		ret = snd_soc_cache_read(codec, reg, &val);
-		if (ret >= 0)
-			return val;
-		else
-			dev_err(codec->dev, "Cache read from %x failed: %d\n",
-				reg, ret);
-	}
-
-	return wm8994_reg_read(codec->control_data, reg);
-}
-
 static int configure_aif_clock(struct snd_soc_codec *codec, int aif)
 {
 	struct wm8994_priv *wm8994 = snd_soc_codec_get_drvdata(codec);

@@ -2660,8 +2622,8 @@ static int wm8994_resume(struct snd_soc_codec *codec)
 
 	if (wm8994->revision < 4) {
 		/* force a HW read */
-		val = wm8994_reg_read(codec->control_data,
-				      WM8994_POWER_MANAGEMENT_5);
+		ret = regmap_read(control->regmap,
+				  WM8994_POWER_MANAGEMENT_5, &val);
 
 		/* modify the cache only */
 		codec->cache_only = 1;

@@ -3103,19 +3065,20 @@ static irqreturn_t wm8994_temp_shut(int irq, void *data)
 
 static int wm8994_codec_probe(struct snd_soc_codec *codec)
 {
-	struct wm8994 *control;
+	struct wm8994 *control = dev_get_drvdata(codec->dev->parent);
 	struct wm8994_priv *wm8994;
 	struct snd_soc_dapm_context *dapm = &codec->dapm;
+	unsigned int reg;
 	int ret, i;
 
-	codec->control_data = dev_get_drvdata(codec->dev->parent);
-	control = codec->control_data;
+	codec->control_data = control->regmap;
 
 	wm8994 = kzalloc(sizeof(struct wm8994_priv), GFP_KERNEL);
 	if (wm8994 == NULL)
 		return -ENOMEM;
 	snd_soc_codec_set_drvdata(codec, wm8994);
 
+	snd_soc_codec_set_cache_io(codec, 16, 16, SND_SOC_REGMAP);
 
 	wm8994->wm8994 = dev_get_drvdata(codec->dev->parent);
 	wm8994->pdata = dev_get_platdata(codec->dev->parent);

@@ -3139,11 +3102,11 @@ static int wm8994_codec_probe(struct snd_soc_codec *codec)
 		if (!wm8994_readable(codec, i) || wm8994_volatile(codec, i))
 			continue;
 
-		ret = wm8994_reg_read(codec->control_data, i);
+		ret = regmap_read(control->regmap, i, &reg);
 		if (ret <= 0)
 			continue;
 
-		ret = snd_soc_cache_write(codec, i, ret);
+		ret = snd_soc_cache_write(codec, i, reg);
 		if (ret != 0) {
 			dev_err(codec->dev,
 				"Failed to initialise cache for 0x%x: %d\n",

@@ -3281,24 +3244,24 @@ static int wm8994_codec_probe(struct snd_soc_codec *codec)
 	 * configured on init - if a system wants to do this dynamically
 	 * at runtime we can deal with that then.
 	 */
-	ret = wm8994_reg_read(codec->control_data, WM8994_GPIO_1);
+	ret = regmap_read(control->regmap, WM8994_GPIO_1, &reg);
 	if (ret < 0) {
 		dev_err(codec->dev, "Failed to read GPIO1 state: %d\n", ret);
 		goto err_irq;
 	}
-	if ((ret & WM8994_GPN_FN_MASK) != WM8994_GP_FN_PIN_SPECIFIC) {
+	if ((reg & WM8994_GPN_FN_MASK) != WM8994_GP_FN_PIN_SPECIFIC) {
 		wm8994->lrclk_shared[0] = 1;
 		wm8994_dai[0].symmetric_rates = 1;
 	} else {
 		wm8994->lrclk_shared[0] = 0;
 	}
 
-	ret = wm8994_reg_read(codec->control_data, WM8994_GPIO_6);
+	ret = regmap_read(control->regmap, WM8994_GPIO_6, &reg);
 	if (ret < 0) {
 		dev_err(codec->dev, "Failed to read GPIO6 state: %d\n", ret);
 		goto err_irq;
 	}
-	if ((ret & WM8994_GPN_FN_MASK) != WM8994_GP_FN_PIN_SPECIFIC) {
+	if ((reg & WM8994_GPN_FN_MASK) != WM8994_GP_FN_PIN_SPECIFIC) {
 		wm8994->lrclk_shared[1] = 1;
 		wm8994_dai[1].symmetric_rates = 1;
 	} else {

@@ -3550,8 +3513,6 @@ static struct snd_soc_codec_driver soc_codec_dev_wm8994 = {
 	.remove =	wm8994_codec_remove,
 	.suspend =	wm8994_suspend,
 	.resume =	wm8994_resume,
-	.read =		wm8994_read,
-	.write =	wm8994_write,
 	.readable_register = wm8994_readable,
 	.volatile_register = wm8994_volatile,
 	.set_bias_level = wm8994_set_bias_level,
Signature · 1 line
1.7.7.3
author
#3 lore raw

PATCH 3/3 ASoC: Remove WM8994 register cache

In reply to Mark Brown

Now that the mfd is using the register map cache there's no need for the CODEC driver to do any register cache management or any funny dances to interact with the other drivers using the device so just remove the cache initialisation and volatility information.

Signed-off-by Mark Brown <[email protected]>
---
 sound/soc/codecs/Makefile        |    2 +-
 sound/soc/codecs/wm8994-tables.c | 3147 --------------------------------------
 sound/soc/codecs/wm8994.c        |   87 --
 sound/soc/codecs/wm8994.h        |   10 -
 4 files changed, 1 insertions(+), 3245 deletions(-)
 delete mode 100644 sound/soc/codecs/wm8994-tables.c
sound/soc/codecs/Makefile +1 -1
index a2c7842..c5c61a9 100644
@@ -81,7 +81,7 @@ snd-soc-wm8988-objs := wm8988.o
 snd-soc-wm8990-objs := wm8990.o
 snd-soc-wm8991-objs := wm8991.o
 snd-soc-wm8993-objs := wm8993.o
-snd-soc-wm8994-objs := wm8994.o wm8994-tables.o wm8958-dsp2.o
+snd-soc-wm8994-objs := wm8994.o wm8958-dsp2.o
 snd-soc-wm8995-objs := wm8995.o
 snd-soc-wm9081-objs := wm9081.o
 snd-soc-wm9705-objs := wm9705.o
sound/soc/codecs/wm8994-tables.c deleted +0 -3147

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sound/soc/codecs/wm8994.c +0 -87

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sound/soc/codecs/wm8994.h +0 -10
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1.7.7.3

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