summaryrefslogtreecommitdiffstats
path: root/sound
diff options
context:
space:
mode:
authorMark Brown <broonie@opensource.wolfsonmicro.com>2011-11-21 12:10:03 +0000
committerMark Brown <broonie@opensource.wolfsonmicro.com>2012-01-24 11:43:18 +0000
commit05d448e2c9bc587216549d690332c72a74271abd (patch)
tree7e49fe8e6faa604f823ba6a2099f27a48a58f158 /sound
parent5091f5b797564930371c218dbc57cc4d99732c1e (diff)
downloadlinux-05d448e2c9bc587216549d690332c72a74271abd.tar.bz2
ASoC: Convert WM8731 to direct regmap API usage
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound')
-rw-r--r--sound/soc/codecs/wm8731.c109
1 files changed, 86 insertions, 23 deletions
diff --git a/sound/soc/codecs/wm8731.c b/sound/soc/codecs/wm8731.c
index 8821af70e660..a32caa72bd7d 100644
--- a/sound/soc/codecs/wm8731.c
+++ b/sound/soc/codecs/wm8731.c
@@ -19,6 +19,7 @@
#include <linux/pm.h>
#include <linux/i2c.h>
#include <linux/slab.h>
+#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
#include <linux/spi/spi.h>
#include <linux/of_device.h>
@@ -41,7 +42,7 @@ static const char *wm8731_supply_names[WM8731_NUM_SUPPLIES] = {
/* codec private data */
struct wm8731_priv {
- enum snd_soc_control_type control_type;
+ struct regmap *regmap;
struct regulator_bulk_data supplies[WM8731_NUM_SUPPLIES];
unsigned int sysclk;
int sysclk_type;
@@ -52,16 +53,30 @@ struct wm8731_priv {
/*
* wm8731 register cache
- * We can't read the WM8731 register space when we are
- * using 2 wire for device control, so we cache them instead.
- * There is no point in caching the reset register
*/
-static const u16 wm8731_reg[WM8731_CACHEREGNUM] = {
- 0x0097, 0x0097, 0x0079, 0x0079,
- 0x000a, 0x0008, 0x009f, 0x000a,
- 0x0000, 0x0000
+static const struct reg_default wm8731_reg_defaults[] = {
+ { 0, 0x0097 },
+ { 1, 0x0097 },
+ { 2, 0x0079 },
+ { 3, 0x0079 },
+ { 4, 0x000a },
+ { 5, 0x0008 },
+ { 6, 0x009f },
+ { 7, 0x000a },
+ { 8, 0x0000 },
+ { 9, 0x0000 },
};
+static bool wm8731_volatile(struct device *dev, unsigned int reg)
+{
+ return reg == WM8731_RESET;
+}
+
+static bool wm8731_writeable(struct device *dev, unsigned int reg)
+{
+ return reg <= WM8731_RESET;
+}
+
#define wm8731_reset(c) snd_soc_write(c, WM8731_RESET, 0)
static const char *wm8731_input_select[] = {"Line In", "Mic"};
@@ -441,7 +456,7 @@ static int wm8731_set_bias_level(struct snd_soc_codec *codec,
if (ret != 0)
return ret;
- snd_soc_cache_sync(codec);
+ regcache_sync(wm8731->regmap);
}
/* Clear PWROFF, gate CLKOUT, everything else as-is */
@@ -452,7 +467,7 @@ static int wm8731_set_bias_level(struct snd_soc_codec *codec,
snd_soc_write(codec, WM8731_PWR, 0xffff);
regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies),
wm8731->supplies);
- codec->cache_sync = 1;
+ regcache_mark_dirty(wm8731->regmap);
break;
}
codec->dapm.bias_level = level;
@@ -513,7 +528,8 @@ static int wm8731_probe(struct snd_soc_codec *codec)
struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);
int ret = 0, i;
- ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8731->control_type);
+ codec->control_data = wm8731->regmap;
+ 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;
@@ -585,9 +601,6 @@ static struct snd_soc_codec_driver soc_codec_dev_wm8731 = {
.suspend = wm8731_suspend,
.resume = wm8731_resume,
.set_bias_level = wm8731_set_bias_level,
- .reg_cache_size = ARRAY_SIZE(wm8731_reg),
- .reg_word_size = sizeof(u16),
- .reg_cache_default = wm8731_reg,
.dapm_widgets = wm8731_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(wm8731_dapm_widgets),
.dapm_routes = wm8731_intercon,
@@ -603,6 +616,19 @@ static const struct of_device_id wm8731_of_match[] = {
MODULE_DEVICE_TABLE(of, wm8731_of_match);
+static const struct regmap_config wm8731_regmap = {
+ .reg_bits = 7,
+ .val_bits = 9,
+
+ .max_register = WM8731_RESET,
+ .volatile_reg = wm8731_volatile,
+ .writeable_reg = wm8731_writeable,
+
+ .cache_type = REGCACHE_RBTREE,
+ .reg_defaults = wm8731_reg_defaults,
+ .num_reg_defaults = ARRAY_SIZE(wm8731_reg_defaults),
+};
+
#if defined(CONFIG_SPI_MASTER)
static int __devinit wm8731_spi_probe(struct spi_device *spi)
{
@@ -613,20 +639,39 @@ static int __devinit wm8731_spi_probe(struct spi_device *spi)
if (wm8731 == NULL)
return -ENOMEM;
- wm8731->control_type = SND_SOC_SPI;
+ wm8731->regmap = regmap_init_spi(spi, &wm8731_regmap);
+ if (IS_ERR(wm8731->regmap)) {
+ ret = PTR_ERR(wm8731->regmap);
+ dev_err(&spi->dev, "Failed to allocate register map: %d\n",
+ ret);
+ goto err;
+ }
+
spi_set_drvdata(spi, wm8731);
ret = snd_soc_register_codec(&spi->dev,
&soc_codec_dev_wm8731, &wm8731_dai, 1);
- if (ret < 0)
- kfree(wm8731);
+ if (ret != 0) {
+ dev_err(&spi->dev, "Failed to register CODEC: %d\n", ret);
+ goto err_regmap;
+ }
+
+ return 0;
+
+err_regmap:
+ regmap_exit(wm8731->regmap);
+err:
+ kfree(wm8731);
return ret;
}
static int __devexit wm8731_spi_remove(struct spi_device *spi)
{
+ struct wm8731_priv *wm8731 = spi_get_drvdata(spi);
+
snd_soc_unregister_codec(&spi->dev);
- kfree(spi_get_drvdata(spi));
+ regmap_exit(wm8731->regmap);
+ kfree(wm8731);
return 0;
}
@@ -652,20 +697,38 @@ static __devinit int wm8731_i2c_probe(struct i2c_client *i2c,
if (wm8731 == NULL)
return -ENOMEM;
+ wm8731->regmap = regmap_init_i2c(i2c, &wm8731_regmap);
+ if (IS_ERR(wm8731->regmap)) {
+ ret = PTR_ERR(wm8731->regmap);
+ dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
+ ret);
+ goto err;
+ }
+
i2c_set_clientdata(i2c, wm8731);
- wm8731->control_type = SND_SOC_I2C;
- ret = snd_soc_register_codec(&i2c->dev,
+ ret = snd_soc_register_codec(&i2c->dev,
&soc_codec_dev_wm8731, &wm8731_dai, 1);
- if (ret < 0)
- kfree(wm8731);
+ if (ret != 0) {
+ dev_err(&i2c->dev, "Failed to register CODEC: %d\n", ret);
+ goto err_regmap;
+ }
+
+ return 0;
+
+err_regmap:
+ regmap_exit(wm8731->regmap);
+err:
+ kfree(wm8731);
return ret;
}
static __devexit int wm8731_i2c_remove(struct i2c_client *client)
{
+ struct wm8731_priv *wm8731 = i2c_get_clientdata(client);
snd_soc_unregister_codec(&client->dev);
- kfree(i2c_get_clientdata(client));
+ regmap_exit(wm8731->regmap);
+ kfree(wm8731);
return 0;
}