1 files changed, 128 insertions, 88 deletions

diff --git a/sound/soc/codecs/wm8776.c b/sound/soc/codecs/wm8776.c
index 04182c464e3..70952ceb278 100644
--- a/sound/soc/codecs/wm8776.c
+++ b/sound/soc/codecs/wm8776.c
@@ -1,7 +1,7 @@
 /*
  * wm8776.c  --  WM8776 ALSA SoC Audio driver
  *
- * Copyright 2009 Wolfson Microelectronics plc
+ * Copyright 2009-12 Wolfson Microelectronics plc
  *
  * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
  *
@@ -18,34 +18,66 @@
 #include <linux/delay.h>
 #include <linux/pm.h>
 #include <linux/i2c.h>
-#include <linux/platform_device.h>
+#include <linux/of_device.h>
+#include <linux/regmap.h>
 #include <linux/spi/spi.h>
 #include <linux/slab.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
 #include <sound/soc.h>
-#include <sound/soc-dapm.h>
 #include <sound/initval.h>
 #include <sound/tlv.h>
 
 #include "wm8776.h"
 
+enum wm8776_chip_type {
+	WM8775 = 1,
+	WM8776,
+};
+
 /* codec private data */
 struct wm8776_priv {
-	enum snd_soc_control_type control_type;
-	u16 reg_cache[WM8776_CACHEREGNUM];
+	struct regmap *regmap;
 	int sysclk[2];
 };
 
-static const u16 wm8776_reg[WM8776_CACHEREGNUM] = {
-	0x79, 0x79, 0x79, 0xff, 0xff,  /* 4 */
-	0xff, 0x00, 0x90, 0x00, 0x00,  /* 9 */
-	0x22, 0x22, 0x22, 0x08, 0xcf,  /* 14 */
-	0xcf, 0x7b, 0x00, 0x32, 0x00,  /* 19 */
-	0xa6, 0x01, 0x01
+static const struct reg_default wm8776_reg_defaults[] = {
+	{  0, 0x79 },
+	{  1, 0x79 },
+	{  2, 0x79 },
+	{  3, 0xff },
+	{  4, 0xff },
+	{  5, 0xff },
+	{  6, 0x00 },
+	{  7, 0x90 },
+	{  8, 0x00 },
+	{  9, 0x00 },
+	{ 10, 0x22 },
+	{ 11, 0x22 },
+	{ 12, 0x22 },
+	{ 13, 0x08 },
+	{ 14, 0xcf },
+	{ 15, 0xcf },
+	{ 16, 0x7b },
+	{ 17, 0x00 },
+	{ 18, 0x32 },
+	{ 19, 0x00 },
+	{ 20, 0xa6 },
+	{ 21, 0x01 },
+	{ 22, 0x01 },
 };
 
+static bool wm8776_volatile(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case WM8776_RESET:
+		return true;
+	default:
+		return false;
+	}
+}
+
 static int wm8776_reset(struct snd_soc_codec *codec)
 {
 	return snd_soc_write(codec, WM8776_RESET, 0);
@@ -217,8 +249,6 @@ static int wm8776_hw_params(struct snd_pcm_substream *substream,
 	int ratio_shift, master;
 	int i;
 
-	iface = 0;
-
 	switch (dai->driver->id) {
 	case WM8776_DAI_DAC:
 		iface_reg = WM8776_DACIFCTRL;
@@ -234,20 +264,24 @@ static int wm8776_hw_params(struct snd_pcm_substream *substream,
 		return -EINVAL;
 	}
 
-
 	/* Set word length */
-	switch (params_format(params)) {
-	case SNDRV_PCM_FORMAT_S16_LE:
+	switch (snd_pcm_format_width(params_format(params))) {
+	case 16:
+		iface = 0;
 		break;
-	case SNDRV_PCM_FORMAT_S20_3LE:
-		iface |= 0x10;
+	case 20:
+		iface = 0x10;
 		break;
-	case SNDRV_PCM_FORMAT_S24_LE:
-		iface |= 0x20;
+	case 24:
+		iface = 0x20;
 		break;
-	case SNDRV_PCM_FORMAT_S32_LE:
-		iface |= 0x30;
+	case 32:
+		iface = 0x30;
 		break;
+	default:
+		dev_err(codec->dev, "Unsupported sample size: %i\n",
+			snd_pcm_format_width(params_format(params)));
+		return -EINVAL;
 	}
 
 	/* Only need to set MCLK/LRCLK ratio if we're master */
@@ -291,7 +325,8 @@ static int wm8776_set_sysclk(struct snd_soc_dai *dai,
 	struct snd_soc_codec *codec = dai->codec;
 	struct wm8776_priv *wm8776 = snd_soc_codec_get_drvdata(codec);
 
-	BUG_ON(dai->driver->id >= ARRAY_SIZE(wm8776->sysclk));
+	if (WARN_ON(dai->driver->id >= ARRAY_SIZE(wm8776->sysclk)))
+		return -EINVAL;
 
 	wm8776->sysclk[dai->driver->id] = freq;
 
@@ -301,13 +336,17 @@ static int wm8776_set_sysclk(struct snd_soc_dai *dai,
 static int wm8776_set_bias_level(struct snd_soc_codec *codec,
 				 enum snd_soc_bias_level level)
 {
+	struct wm8776_priv *wm8776 = snd_soc_codec_get_drvdata(codec);
+
 	switch (level) {
 	case SND_SOC_BIAS_ON:
 		break;
 	case SND_SOC_BIAS_PREPARE:
 		break;
 	case SND_SOC_BIAS_STANDBY:
-		if (codec->bias_level == SND_SOC_BIAS_OFF) {
+		if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
+			regcache_sync(wm8776->regmap);
+
 			/* Disable the global powerdown; DAPM does the rest */
 			snd_soc_update_bits(codec, WM8776_PWRDOWN, 1, 0);
 		}
@@ -318,26 +357,21 @@ static int wm8776_set_bias_level(struct snd_soc_codec *codec,
 		break;
 	}
 
-	codec->bias_level = level;
+	codec->dapm.bias_level = level;
 	return 0;
 }
 
-#define WM8776_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
-		      SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\
-		      SNDRV_PCM_RATE_96000)
-
-
 #define WM8776_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
 			SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
 
-static struct snd_soc_dai_ops wm8776_dac_ops = {
+static const struct snd_soc_dai_ops wm8776_dac_ops = {
 	.digital_mute	= wm8776_mute,
 	.hw_params      = wm8776_hw_params,
 	.set_fmt        = wm8776_set_fmt,
 	.set_sysclk     = wm8776_set_sysclk,
 };
 
-static struct snd_soc_dai_ops wm8776_adc_ops = {
+static const struct snd_soc_dai_ops wm8776_adc_ops = {
 	.hw_params      = wm8776_hw_params,
 	.set_fmt        = wm8776_set_fmt,
 	.set_sysclk     = wm8776_set_sysclk,
@@ -351,7 +385,9 @@ static struct snd_soc_dai_driver wm8776_dai[] = {
 			.stream_name = "Playback",
 			.channels_min = 2,
 			.channels_max = 2,
-			.rates = WM8776_RATES,
+			.rates = SNDRV_PCM_RATE_CONTINUOUS,
+			.rate_min = 32000,
+			.rate_max = 192000,
 			.formats = WM8776_FORMATS,
 		},
 		.ops = &wm8776_dac_ops,
@@ -363,7 +399,9 @@ static struct snd_soc_dai_driver wm8776_dai[] = {
 			.stream_name = "Capture",
 			.channels_min = 2,
 			.channels_max = 2,
-			.rates = WM8776_RATES,
+			.rates = SNDRV_PCM_RATE_CONTINUOUS,
+			.rate_min = 32000,
+			.rate_max = 96000,
 			.formats = WM8776_FORMATS,
 		},
 		.ops = &wm8776_adc_ops,
@@ -371,7 +409,7 @@ static struct snd_soc_dai_driver wm8776_dai[] = {
 };
 
 #ifdef CONFIG_PM
-static int wm8776_suspend(struct snd_soc_codec *codec, pm_message_t state)
+static int wm8776_suspend(struct snd_soc_codec *codec)
 {
 	wm8776_set_bias_level(codec, SND_SOC_BIAS_OFF);
 
@@ -380,21 +418,7 @@ static int wm8776_suspend(struct snd_soc_codec *codec, pm_message_t state)
 
 static int wm8776_resume(struct snd_soc_codec *codec)
 {
-	int i;
-	u8 data[2];
-	u16 *cache = codec->reg_cache;
-
-	/* Sync reg_cache with the hardware */
-	for (i = 0; i < ARRAY_SIZE(wm8776_reg); i++) {
-		if (cache[i] == wm8776_reg[i])
-			continue;
-		data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
-		data[1] = cache[i] & 0x00ff;
-		codec->hw_write(codec->control_data, data, 2);
-	}
-
 	wm8776_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
-
 	return 0;
 }
 #else
@@ -404,15 +428,8 @@ static int wm8776_resume(struct snd_soc_codec *codec)
 
 static int wm8776_probe(struct snd_soc_codec *codec)
 {
-	struct wm8776_priv *wm8776 = snd_soc_codec_get_drvdata(codec);
 	int ret = 0;
 
-	ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8776->control_type);
-	if (ret < 0) {
-		dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
-		return ret;
-	}
-
 	ret = wm8776_reset(codec);
 	if (ret < 0) {
 		dev_err(codec->dev, "Failed to issue reset: %d\n", ret);
@@ -426,12 +443,6 @@ static int wm8776_probe(struct snd_soc_codec *codec)
 	snd_soc_update_bits(codec, WM8776_HPRVOL, 0x100, 0x100);
 	snd_soc_update_bits(codec, WM8776_DACRVOL, 0x100, 0x100);
 
-	snd_soc_add_controls(codec, wm8776_snd_controls,
-			     ARRAY_SIZE(wm8776_snd_controls));
-	snd_soc_dapm_new_controls(codec, wm8776_dapm_widgets,
-				  ARRAY_SIZE(wm8776_dapm_widgets));
-	snd_soc_dapm_add_routes(codec, routes, ARRAY_SIZE(routes));
-
 	return ret;
 }
 
@@ -448,89 +459,118 @@ static struct snd_soc_codec_driver soc_codec_dev_wm8776 = {
 	.suspend = 	wm8776_suspend,
 	.resume =	wm8776_resume,
 	.set_bias_level = wm8776_set_bias_level,
-	.reg_cache_size = ARRAY_SIZE(wm8776_reg),
-	.reg_word_size = sizeof(u16),
-	.reg_cache_default = wm8776_reg,
+
+	.controls = wm8776_snd_controls,
+	.num_controls = ARRAY_SIZE(wm8776_snd_controls),
+	.dapm_widgets = wm8776_dapm_widgets,
+	.num_dapm_widgets = ARRAY_SIZE(wm8776_dapm_widgets),
+	.dapm_routes = routes,
+	.num_dapm_routes = ARRAY_SIZE(routes),
+};
+
+static const struct of_device_id wm8776_of_match[] = {
+	{ .compatible = "wlf,wm8776", },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, wm8776_of_match);
+
+static const struct regmap_config wm8776_regmap = {
+	.reg_bits = 7,
+	.val_bits = 9,
+	.max_register = WM8776_RESET,
+
+	.reg_defaults = wm8776_reg_defaults,
+	.num_reg_defaults = ARRAY_SIZE(wm8776_reg_defaults),
+	.cache_type = REGCACHE_RBTREE,
+
+	.volatile_reg = wm8776_volatile,
 };
 
 #if defined(CONFIG_SPI_MASTER)
-static int __devinit wm8776_spi_probe(struct spi_device *spi)
+static int wm8776_spi_probe(struct spi_device *spi)
 {
 	struct wm8776_priv *wm8776;
 	int ret;
 
-	wm8776 = kzalloc(sizeof(struct wm8776_priv), GFP_KERNEL);
+	wm8776 = devm_kzalloc(&spi->dev, sizeof(struct wm8776_priv),
+			      GFP_KERNEL);
 	if (wm8776 == NULL)
 		return -ENOMEM;
 
-	wm8776->control_type = SND_SOC_SPI;
+	wm8776->regmap = devm_regmap_init_spi(spi, &wm8776_regmap);
+	if (IS_ERR(wm8776->regmap))
+		return PTR_ERR(wm8776->regmap);
+
 	spi_set_drvdata(spi, wm8776);
 
 	ret = snd_soc_register_codec(&spi->dev,
 			&soc_codec_dev_wm8776, wm8776_dai, ARRAY_SIZE(wm8776_dai));
-	if (ret < 0)
-		kfree(wm8776);
+
 	return ret;
 }
 
-static int __devexit wm8776_spi_remove(struct spi_device *spi)
+static int wm8776_spi_remove(struct spi_device *spi)
 {
 	snd_soc_unregister_codec(&spi->dev);
-	kfree(spi_get_drvdata(spi));
 	return 0;
 }
 
 static struct spi_driver wm8776_spi_driver = {
 	.driver = {
-		.name	= "wm8776-codec",
+		.name	= "wm8776",
 		.owner	= THIS_MODULE,
+		.of_match_table = wm8776_of_match,
 	},
 	.probe		= wm8776_spi_probe,
-	.remove		= __devexit_p(wm8776_spi_remove),
+	.remove		= wm8776_spi_remove,
 };
 #endif /* CONFIG_SPI_MASTER */
 
-#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
-static __devinit int wm8776_i2c_probe(struct i2c_client *i2c,
-				      const struct i2c_device_id *id)
+#if IS_ENABLED(CONFIG_I2C)
+static int wm8776_i2c_probe(struct i2c_client *i2c,
+			    const struct i2c_device_id *id)
 {
 	struct wm8776_priv *wm8776;
 	int ret;
 
-	wm8776 = kzalloc(sizeof(struct wm8776_priv), GFP_KERNEL);
+	wm8776 = devm_kzalloc(&i2c->dev, sizeof(struct wm8776_priv),
+			      GFP_KERNEL);
 	if (wm8776 == NULL)
 		return -ENOMEM;
 
+	wm8776->regmap = devm_regmap_init_i2c(i2c, &wm8776_regmap);
+	if (IS_ERR(wm8776->regmap))
+		return PTR_ERR(wm8776->regmap);
+
 	i2c_set_clientdata(i2c, wm8776);
-	wm8776->control_type = SND_SOC_I2C;
 
 	ret =  snd_soc_register_codec(&i2c->dev,
 			&soc_codec_dev_wm8776, wm8776_dai, ARRAY_SIZE(wm8776_dai));
-	if (ret < 0)
-		kfree(wm8776);
+
 	return ret;
 }
 
-static __devexit int wm8776_i2c_remove(struct i2c_client *client)
+static int wm8776_i2c_remove(struct i2c_client *client)
 {
 	snd_soc_unregister_codec(&client->dev);
-	kfree(i2c_get_clientdata(client));
 	return 0;
 }
 
 static const struct i2c_device_id wm8776_i2c_id[] = {
-	{ "wm8776", 0 },
+	{ "wm8775", WM8775 },
+	{ "wm8776", WM8776 },
 	{ }
 };
 MODULE_DEVICE_TABLE(i2c, wm8776_i2c_id);
 
 static struct i2c_driver wm8776_i2c_driver = {
 	.driver = {
-		.name = "wm8776-codec",
+		.name = "wm8776",
 		.owner = THIS_MODULE,
+		.of_match_table = wm8776_of_match,
 	},
 	.probe =    wm8776_i2c_probe,
-	.remove =   __devexit_p(wm8776_i2c_remove),
+	.remove =   wm8776_i2c_remove,
 	.id_table = wm8776_i2c_id,
 };
 #endif
@@ -538,7 +578,7 @@ static struct i2c_driver wm8776_i2c_driver = {
 static int __init wm8776_modinit(void)
 {
 	int ret = 0;
-#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
+#if IS_ENABLED(CONFIG_I2C)
 	ret = i2c_add_driver(&wm8776_i2c_driver);
 	if (ret != 0) {
 		printk(KERN_ERR "Failed to register wm8776 I2C driver: %d\n",
@@ -558,7 +598,7 @@ module_init(wm8776_modinit);
 
 static void __exit wm8776_exit(void)
 {
-#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
+#if IS_ENABLED(CONFIG_I2C)
 	i2c_del_driver(&wm8776_i2c_driver);
 #endif
 #if defined(CONFIG_SPI_MASTER)