[PATCH 1/4] ASoC: wm8770: Convert to direct regmap API usage

[PATCH 1/4] ASoC: wm8770: Convert to direct regmap API usage

[Mark Brown]

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
---
 sound/soc/codecs/wm8770.c |  100 +++++++++++++++++++++++++++++----------------
 1 file changed, 65 insertions(+), 35 deletions(-)

diff --git a/sound/soc/codecs/wm8770.c b/sound/soc/codecs/wm8770.c
index c7c0034..21ec563 100644
--- a/sound/soc/codecs/wm8770.c
+++ b/sound/soc/codecs/wm8770.c
@@ -17,6 +17,7 @@
 #include <linux/of_device.h>
 #include <linux/pm.h>
 #include <linux/spi/spi.h>
+#include <linux/regmap.h>
 #include <linux/regulator/consumer.h>
 #include <linux/slab.h>
 #include <sound/core.h>
@@ -35,19 +36,52 @@ static const char *wm8770_supply_names[WM8770_NUM_SUPPLIES] = {
 	"DVDD"
 };
 
-static const u16 wm8770_reg_defs[WM8770_CACHEREGNUM] = {
-	0x7f, 0x7f, 0x7f, 0x7f,
-	0x7f, 0x7f, 0x7f, 0x7f,
-	0x7f, 0xff, 0xff, 0xff,
-	0xff, 0xff, 0xff, 0xff,
-	0xff, 0xff, 0, 0x90, 0,
-	0, 0x22, 0x22, 0x3e,
-	0xc, 0xc, 0x100, 0x189,
-	0x189, 0x8770
+static const struct reg_default wm8770_reg_defaults[] = {
+	{  0, 0x7f },
+	{  1, 0x7f },
+	{  2, 0x7f },
+	{  3, 0x7f },
+	{  4, 0x7f },
+	{  5, 0x7f },
+	{  6, 0x7f },
+	{  7, 0x7f },
+	{  8, 0x7f },
+	{  9, 0xff },
+	{ 10, 0xff },
+	{ 11, 0xff },
+	{ 12, 0xff },
+	{ 13, 0xff },
+	{ 14, 0xff },
+	{ 15, 0xff },
+	{ 16, 0xff },
+	{ 17, 0xff },
+	{ 18, 0    },
+	{ 19, 0x90 },
+	{ 20, 0    },
+	{ 21, 0    },
+	{ 22, 0x22 },
+	{ 23, 0x22 },
+	{ 24, 0x3e },
+	{ 25, 0xc  },
+	{ 26, 0xc  },
+	{ 27, 0x100 },
+	{ 28, 0x189 },
+	{ 29, 0x189 },
+	{ 30, 0x8770 },
 };
 
+static bool wm8770_volatile_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case WM8770_RESET:
+		return true;
+	default:
+		return false;
+	}
+}
+
 struct wm8770_priv {
-	enum snd_soc_control_type control_type;
+	struct regmap *regmap;
 	struct regulator_bulk_data supplies[WM8770_NUM_SUPPLIES];
 	struct notifier_block disable_nb[WM8770_NUM_SUPPLIES];
 	struct snd_soc_codec *codec;
@@ -71,7 +105,7 @@ static int wm8770_regulator_event_##n(struct notifier_block *nb, \
 	struct wm8770_priv *wm8770 = container_of(nb, struct wm8770_priv, \
 				     disable_nb[n]); \
 	if (event & REGULATOR_EVENT_DISABLE) { \
-		wm8770->codec->cache_sync = 1; \
+		regcache_mark_dirty(wm8770->regmap);	\
 	} \
 	return 0; \
 }
@@ -466,24 +500,6 @@ static int wm8770_set_sysclk(struct snd_soc_dai *dai,
 	return 0;
 }
 
-static void wm8770_sync_cache(struct snd_soc_codec *codec)
-{
-	int i;
-	u16 *cache;
-
-	if (!codec->cache_sync)
-		return;
-
-	codec->cache_only = 0;
-	cache = codec->reg_cache;
-	for (i = 0; i < codec->driver->reg_cache_size; i++) {
-		if (i == WM8770_RESET || cache[i] == wm8770_reg_defs[i])
-			continue;
-		snd_soc_write(codec, i, cache[i]);
-	}
-	codec->cache_sync = 0;
-}
-
 static int wm8770_set_bias_level(struct snd_soc_codec *codec,
 				 enum snd_soc_bias_level level)
 {
@@ -507,7 +523,9 @@ static int wm8770_set_bias_level(struct snd_soc_codec *codec,
 					ret);
 				return ret;
 			}
-			wm8770_sync_cache(codec);
+
+			regcache_sync(wm8770->regmap);
+
 			/* global powerup */
 			snd_soc_write(codec, WM8770_PWDNCTRL, 0);
 		}
@@ -580,7 +598,7 @@ static int wm8770_probe(struct snd_soc_codec *codec)
 	wm8770 = snd_soc_codec_get_drvdata(codec);
 	wm8770->codec = codec;
 
-	ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8770->control_type);
+	ret = snd_soc_codec_set_cache_io(codec, 7, 9, SND_SOC_REGMAP);
 	if (ret < 0) {
 		dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
 		return ret;
@@ -678,9 +696,6 @@ static struct snd_soc_codec_driver soc_codec_dev_wm8770 = {
 	.resume = wm8770_resume,
 	.set_bias_level = wm8770_set_bias_level,
 	.idle_bias_off = true,
-	.reg_cache_size = ARRAY_SIZE(wm8770_reg_defs),
-	.reg_word_size = sizeof (u16),
-	.reg_cache_default = wm8770_reg_defs
 };
 
 static const struct of_device_id wm8770_of_match[] = {
@@ -689,6 +704,18 @@ static const struct of_device_id wm8770_of_match[] = {
 };
 MODULE_DEVICE_TABLE(of, wm8770_of_match);
 
+static const struct regmap_config wm8770_regmap = {
+	.reg_bits = 7,
+	.val_bits = 9,
+	.max_register = WM8770_RESET,
+
+	.reg_defaults = wm8770_reg_defaults,
+	.num_reg_defaults = ARRAY_SIZE(wm8770_reg_defaults),
+	.cache_type = REGCACHE_RBTREE,
+
+	.volatile_reg = wm8770_volatile_reg,
+};
+
 static int __devinit wm8770_spi_probe(struct spi_device *spi)
 {
 	struct wm8770_priv *wm8770;
@@ -699,7 +726,10 @@ static int __devinit wm8770_spi_probe(struct spi_device *spi)
 	if (!wm8770)
 		return -ENOMEM;
 
-	wm8770->control_type = SND_SOC_SPI;
+	wm8770->regmap = devm_regmap_init_spi(spi, &wm8770_regmap);
+	if (IS_ERR(wm8770->regmap))
+		return PTR_ERR(wm8770->regmap);
+
 	spi_set_drvdata(spi, wm8770);
 
 	ret = snd_soc_register_codec(&spi->dev,
-- 
1.7.10.4

[PATCH 2/4] ASoC: wm8770: Remove unneeded bias level manipulation

[Mark Brown]

Since the device is now idle_bias_off these never have any useful effect,
the device will be brought to _OFF when idle, and will at best leave it
powered for longer.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
---
 sound/soc/codecs/wm8770.c |   22 ----------------------
 1 file changed, 22 deletions(-)

diff --git a/sound/soc/codecs/wm8770.c b/sound/soc/codecs/wm8770.c
index 21ec563..8eefe42 100644
--- a/sound/soc/codecs/wm8770.c
+++ b/sound/soc/codecs/wm8770.c
@@ -572,23 +572,6 @@ static struct snd_soc_dai_driver wm8770_dai = {
 	.symmetric_rates = 1
 };
 
-#ifdef CONFIG_PM
-static int wm8770_suspend(struct snd_soc_codec *codec)
-{
-	wm8770_set_bias_level(codec, SND_SOC_BIAS_OFF);
-	return 0;
-}
-
-static int wm8770_resume(struct snd_soc_codec *codec)
-{
-	wm8770_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
-	return 0;
-}
-#else
-#define wm8770_suspend NULL
-#define wm8770_resume NULL
-#endif
-
 static int wm8770_probe(struct snd_soc_codec *codec)
 {
 	struct wm8770_priv *wm8770;
@@ -642,8 +625,6 @@ static int wm8770_probe(struct snd_soc_codec *codec)
 		goto err_reg_enable;
 	}
 
-	wm8770_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
-
 	/* latch the volume update bits */
 	snd_soc_update_bits(codec, WM8770_MSDIGVOL, 0x100, 0x100);
 	snd_soc_update_bits(codec, WM8770_MSALGVOL, 0x100, 0x100);
@@ -680,7 +661,6 @@ static int wm8770_remove(struct snd_soc_codec *codec)
 	int i;
 
 	wm8770 = snd_soc_codec_get_drvdata(codec);
-	wm8770_set_bias_level(codec, SND_SOC_BIAS_OFF);
 
 	for (i = 0; i < ARRAY_SIZE(wm8770->supplies); ++i)
 		regulator_unregister_notifier(wm8770->supplies[i].consumer,
@@ -692,8 +672,6 @@ static int wm8770_remove(struct snd_soc_codec *codec)
 static struct snd_soc_codec_driver soc_codec_dev_wm8770 = {
 	.probe = wm8770_probe,
 	.remove = wm8770_remove,
-	.suspend = wm8770_suspend,
-	.resume = wm8770_resume,
 	.set_bias_level = wm8770_set_bias_level,
 	.idle_bias_off = true,
 };
-- 
1.7.10.4

[PATCH 3/4] ASoC: wm8770: Remove regulator allocation to SPI probe

[Mark Brown]

This is more idiomatic and ensures we don't try to do the ASoC card setup
until we've got all the required resources.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
---
 sound/soc/codecs/wm8770.c |   81 ++++++++++++++++++++-------------------------
 1 file changed, 35 insertions(+), 46 deletions(-)

diff --git a/sound/soc/codecs/wm8770.c b/sound/soc/codecs/wm8770.c
index 8eefe42..9092031 100644
--- a/sound/soc/codecs/wm8770.c
+++ b/sound/soc/codecs/wm8770.c
@@ -576,7 +576,6 @@ static int wm8770_probe(struct snd_soc_codec *codec)
 {
 	struct wm8770_priv *wm8770;
 	int ret;
-	int i;
 
 	wm8770 = snd_soc_codec_get_drvdata(codec);
 	wm8770->codec = codec;
@@ -587,36 +586,11 @@ static int wm8770_probe(struct snd_soc_codec *codec)
 		return ret;
 	}
 
-	for (i = 0; i < ARRAY_SIZE(wm8770->supplies); i++)
-		wm8770->supplies[i].supply = wm8770_supply_names[i];
-
-	ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(wm8770->supplies),
-				 wm8770->supplies);
-	if (ret) {
-		dev_err(codec->dev, "Failed to request supplies: %d\n", ret);
-		return ret;
-	}
-
-	wm8770->disable_nb[0].notifier_call = wm8770_regulator_event_0;
-	wm8770->disable_nb[1].notifier_call = wm8770_regulator_event_1;
-	wm8770->disable_nb[2].notifier_call = wm8770_regulator_event_2;
-
-	/* This should really be moved into the regulator core */
-	for (i = 0; i < ARRAY_SIZE(wm8770->supplies); i++) {
-		ret = regulator_register_notifier(wm8770->supplies[i].consumer,
-						  &wm8770->disable_nb[i]);
-		if (ret) {
-			dev_err(codec->dev,
-				"Failed to register regulator notifier: %d\n",
-				ret);
-		}
-	}
-
 	ret = regulator_bulk_enable(ARRAY_SIZE(wm8770->supplies),
 				    wm8770->supplies);
 	if (ret) {
 		dev_err(codec->dev, "Failed to enable supplies: %d\n", ret);
-		goto err_reg_get;
+		return ret;
 	}
 
 	ret = wm8770_reset(codec);
@@ -646,32 +620,14 @@ static int wm8770_probe(struct snd_soc_codec *codec)
 				  ARRAY_SIZE(wm8770_dapm_widgets));
 	snd_soc_dapm_add_routes(&codec->dapm, wm8770_intercon,
 				ARRAY_SIZE(wm8770_intercon));
-	return 0;
 
 err_reg_enable:
 	regulator_bulk_disable(ARRAY_SIZE(wm8770->supplies), wm8770->supplies);
-err_reg_get:
-	regulator_bulk_free(ARRAY_SIZE(wm8770->supplies), wm8770->supplies);
 	return ret;
 }
 
-static int wm8770_remove(struct snd_soc_codec *codec)
-{
-	struct wm8770_priv *wm8770;
-	int i;
-
-	wm8770 = snd_soc_codec_get_drvdata(codec);
-
-	for (i = 0; i < ARRAY_SIZE(wm8770->supplies); ++i)
-		regulator_unregister_notifier(wm8770->supplies[i].consumer,
-					      &wm8770->disable_nb[i]);
-	regulator_bulk_free(ARRAY_SIZE(wm8770->supplies), wm8770->supplies);
-	return 0;
-}
-
 static struct snd_soc_codec_driver soc_codec_dev_wm8770 = {
 	.probe = wm8770_probe,
-	.remove = wm8770_remove,
 	.set_bias_level = wm8770_set_bias_level,
 	.idle_bias_off = true,
 };
@@ -697,13 +653,38 @@ static const struct regmap_config wm8770_regmap = {
 static int __devinit wm8770_spi_probe(struct spi_device *spi)
 {
 	struct wm8770_priv *wm8770;
-	int ret;
+	int ret, i;
 
 	wm8770 = devm_kzalloc(&spi->dev, sizeof(struct wm8770_priv),
 			      GFP_KERNEL);
 	if (!wm8770)
 		return -ENOMEM;
 
+	for (i = 0; i < ARRAY_SIZE(wm8770->supplies); i++)
+		wm8770->supplies[i].supply = wm8770_supply_names[i];
+
+	ret = devm_regulator_bulk_get(&spi->dev, ARRAY_SIZE(wm8770->supplies),
+				      wm8770->supplies);
+	if (ret) {
+		dev_err(&spi->dev, "Failed to request supplies: %d\n", ret);
+		return ret;
+	}
+
+	wm8770->disable_nb[0].notifier_call = wm8770_regulator_event_0;
+	wm8770->disable_nb[1].notifier_call = wm8770_regulator_event_1;
+	wm8770->disable_nb[2].notifier_call = wm8770_regulator_event_2;
+
+	/* This should really be moved into the regulator core */
+	for (i = 0; i < ARRAY_SIZE(wm8770->supplies); i++) {
+		ret = regulator_register_notifier(wm8770->supplies[i].consumer,
+						  &wm8770->disable_nb[i]);
+		if (ret) {
+			dev_err(&spi->dev,
+				"Failed to register regulator notifier: %d\n",
+				ret);
+		}
+	}
+
 	wm8770->regmap = devm_regmap_init_spi(spi, &wm8770_regmap);
 	if (IS_ERR(wm8770->regmap))
 		return PTR_ERR(wm8770->regmap);
@@ -718,7 +699,15 @@ static int __devinit wm8770_spi_probe(struct spi_device *spi)
 
 static int __devexit wm8770_spi_remove(struct spi_device *spi)
 {
+	struct wm8770_priv *wm8770 = spi_get_drvdata(spi);
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(wm8770->supplies); ++i)
+		regulator_unregister_notifier(wm8770->supplies[i].consumer,
+					      &wm8770->disable_nb[i]);
+
 	snd_soc_unregister_codec(&spi->dev);
+
 	return 0;
 }
 
-- 
1.7.10.4

[PATCH 4/4] ASoC: wm8770: Conver to table based DAPM and control init

[Mark Brown]

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
---
 sound/soc/codecs/wm8770.c |   14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/sound/soc/codecs/wm8770.c b/sound/soc/codecs/wm8770.c
index 9092031..0b690ba 100644
--- a/sound/soc/codecs/wm8770.c
+++ b/sound/soc/codecs/wm8770.c
@@ -614,13 +614,6 @@ static int wm8770_probe(struct snd_soc_codec *codec)
 	/* mute all DACs */
 	snd_soc_update_bits(codec, WM8770_DACMUTE, 0x10, 0x10);
 
-	snd_soc_add_codec_controls(codec, wm8770_snd_controls,
-			     ARRAY_SIZE(wm8770_snd_controls));
-	snd_soc_dapm_new_controls(&codec->dapm, wm8770_dapm_widgets,
-				  ARRAY_SIZE(wm8770_dapm_widgets));
-	snd_soc_dapm_add_routes(&codec->dapm, wm8770_intercon,
-				ARRAY_SIZE(wm8770_intercon));
-
 err_reg_enable:
 	regulator_bulk_disable(ARRAY_SIZE(wm8770->supplies), wm8770->supplies);
 	return ret;
@@ -630,6 +623,13 @@ static struct snd_soc_codec_driver soc_codec_dev_wm8770 = {
 	.probe = wm8770_probe,
 	.set_bias_level = wm8770_set_bias_level,
 	.idle_bias_off = true,
+
+	.controls = wm8770_snd_controls,
+	.num_controls = ARRAY_SIZE(wm8770_snd_controls),
+	.dapm_widgets = wm8770_dapm_widgets,
+	.num_dapm_widgets = ARRAY_SIZE(wm8770_dapm_widgets),
+	.dapm_routes = wm8770_intercon,
+	.num_dapm_routes = ARRAY_SIZE(wm8770_intercon),
 };
 
 static const struct of_device_id wm8770_of_match[] = {
-- 
1.7.10.4