提交 49992624 编写于 作者: M Mark Brown

ASoC: wm8900: Convert to direct regmap API usage

Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
上级 6a58870d
......@@ -23,6 +23,7 @@
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/i2c.h>
#include <linux/regmap.h>
#include <linux/spi/spi.h>
#include <linux/slab.h>
#include <sound/core.h>
......@@ -137,7 +138,7 @@
#define WM8900_LRC_MASK 0x03ff
struct wm8900_priv {
enum snd_soc_control_type control_type;
struct regmap *regmap;
u32 fll_in; /* FLL input frequency */
u32 fll_out; /* FLL output frequency */
......@@ -147,54 +148,77 @@ struct wm8900_priv {
* wm8900 register cache. We can't read the entire register space and we
* have slow control buses so we cache the registers.
*/
static const u16 wm8900_reg_defaults[WM8900_MAXREG] = {
0x8900, 0x0000,
0xc000, 0x0000,
0x4050, 0x4000,
0x0008, 0x0000,
0x0040, 0x0040,
0x1004, 0x00c0,
0x00c0, 0x0000,
0x0100, 0x00c0,
0x00c0, 0x0000,
0xb001, 0x0000,
0x0000, 0x0044,
0x004c, 0x004c,
0x0044, 0x0044,
0x0000, 0x0044,
0x0000, 0x0000,
0x0002, 0x0000,
0x0000, 0x0000,
0x0000, 0x0000,
0x0008, 0x0000,
0x0000, 0x0008,
0x0097, 0x0100,
0x0000, 0x0000,
0x0050, 0x0050,
0x0055, 0x0055,
0x0055, 0x0000,
0x0000, 0x0079,
0x0079, 0x0079,
0x0079, 0x0000,
/* Remaining registers all zero */
static const struct reg_default wm8900_reg_defaults[] = {
{ 1, 0x0000 },
{ 2, 0xc000 },
{ 3, 0x0000 },
{ 4, 0x4050 },
{ 5, 0x4000 },
{ 6, 0x0008 },
{ 7, 0x0000 },
{ 8, 0x0040 },
{ 9, 0x0040 },
{ 10, 0x1004 },
{ 11, 0x00c0 },
{ 12, 0x00c0 },
{ 13, 0x0000 },
{ 14, 0x0100 },
{ 15, 0x00c0 },
{ 16, 0x00c0 },
{ 17, 0x0000 },
{ 18, 0xb001 },
{ 19, 0x0000 },
{ 20, 0x0000 },
{ 21, 0x0044 },
{ 22, 0x004c },
{ 23, 0x004c },
{ 24, 0x0044 },
{ 25, 0x0044 },
{ 26, 0x0000 },
{ 27, 0x0044 },
{ 28, 0x0000 },
{ 29, 0x0000 },
{ 30, 0x0002 },
{ 31, 0x0000 },
{ 32, 0x0000 },
{ 33, 0x0000 },
{ 34, 0x0000 },
{ 35, 0x0000 },
{ 36, 0x0008 },
{ 37, 0x0000 },
{ 38, 0x0000 },
{ 39, 0x0008 },
{ 40, 0x0097 },
{ 41, 0x0100 },
{ 42, 0x0000 },
{ 43, 0x0000 },
{ 44, 0x0050 },
{ 45, 0x0050 },
{ 46, 0x0055 },
{ 47, 0x0055 },
{ 48, 0x0055 },
{ 49, 0x0000 },
{ 50, 0x0000 },
{ 51, 0x0079 },
{ 52, 0x0079 },
{ 53, 0x0079 },
{ 54, 0x0079 },
{ 55, 0x0000 },
};
static int wm8900_volatile_register(struct snd_soc_codec *codec, unsigned int reg)
static bool wm8900_volatile_register(struct device *dev, unsigned int reg)
{
switch (reg) {
case WM8900_REG_ID:
return 1;
return true;
default:
return 0;
return false;
}
}
static void wm8900_reset(struct snd_soc_codec *codec)
{
snd_soc_write(codec, WM8900_REG_RESET, 0);
memcpy(codec->reg_cache, wm8900_reg_defaults,
sizeof(wm8900_reg_defaults));
}
static int wm8900_hp_event(struct snd_soc_dapm_widget *w,
......@@ -1119,13 +1143,16 @@ static int wm8900_suspend(struct snd_soc_codec *codec)
static int wm8900_resume(struct snd_soc_codec *codec)
{
struct wm8900_priv *wm8900 = snd_soc_codec_get_drvdata(codec);
u16 *cache;
int i, ret;
cache = kmemdup(codec->reg_cache, sizeof(wm8900_reg_defaults),
GFP_KERNEL);
int ret;
wm8900_reset(codec);
ret = regcache_sync(wm8900->regmap);
if (ret != 0) {
dev_err(codec->dev, "Failed to restore cache: %d\n", ret);
return ret;
}
wm8900_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
/* Restart the FLL? */
......@@ -1139,27 +1166,18 @@ static int wm8900_resume(struct snd_soc_codec *codec)
ret = wm8900_set_fll(codec, 0, fll_in, fll_out);
if (ret != 0) {
dev_err(codec->dev, "Failed to restart FLL\n");
kfree(cache);
return ret;
}
}
if (cache) {
for (i = 0; i < WM8900_MAXREG; i++)
snd_soc_write(codec, i, cache[i]);
kfree(cache);
} else
dev_err(codec->dev, "Unable to allocate register cache\n");
return 0;
}
static int wm8900_probe(struct snd_soc_codec *codec)
{
struct wm8900_priv *wm8900 = snd_soc_codec_get_drvdata(codec);
int ret = 0, reg;
ret = snd_soc_codec_set_cache_io(codec, 8, 16, wm8900->control_type);
ret = snd_soc_codec_set_cache_io(codec, 8, 16, SND_SOC_REGMAP);
if (ret != 0) {
dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
return ret;
......@@ -1207,10 +1225,6 @@ static struct snd_soc_codec_driver soc_codec_dev_wm8900 = {
.suspend = wm8900_suspend,
.resume = wm8900_resume,
.set_bias_level = wm8900_set_bias_level,
.volatile_register = wm8900_volatile_register,
.reg_cache_size = ARRAY_SIZE(wm8900_reg_defaults),
.reg_word_size = sizeof(u16),
.reg_cache_default = wm8900_reg_defaults,
.controls = wm8900_snd_controls,
.num_controls = ARRAY_SIZE(wm8900_snd_controls),
......@@ -1220,6 +1234,18 @@ static struct snd_soc_codec_driver soc_codec_dev_wm8900 = {
.num_dapm_routes = ARRAY_SIZE(wm8900_dapm_routes),
};
static const struct regmap_config wm8900_regmap = {
.reg_bits = 8,
.val_bits = 16,
.max_register = WM8900_MAXREG,
.reg_defaults = wm8900_reg_defaults,
.num_reg_defaults = ARRAY_SIZE(wm8900_reg_defaults),
.cache_type = REGCACHE_RBTREE,
.volatile_reg = wm8900_volatile_register,
};
#if defined(CONFIG_SPI_MASTER)
static int __devinit wm8900_spi_probe(struct spi_device *spi)
{
......@@ -1231,7 +1257,10 @@ static int __devinit wm8900_spi_probe(struct spi_device *spi)
if (wm8900 == NULL)
return -ENOMEM;
wm8900->control_type = SND_SOC_SPI;
wm8900->regmap = devm_regmap_init_spi(spi, &wm8900_regmap);
if (IS_ERR(wm8900->regmap))
return PTR_ERR(wm8900->regmap);
spi_set_drvdata(spi, wm8900);
ret = snd_soc_register_codec(&spi->dev,
......@@ -1268,8 +1297,11 @@ static __devinit int wm8900_i2c_probe(struct i2c_client *i2c,
if (wm8900 == NULL)
return -ENOMEM;
wm8900->regmap = devm_regmap_init_i2c(i2c, &wm8900_regmap);
if (IS_ERR(wm8900->regmap))
return PTR_ERR(wm8900->regmap);
i2c_set_clientdata(i2c, wm8900);
wm8900->control_type = SND_SOC_I2C;
ret = snd_soc_register_codec(&i2c->dev,
&soc_codec_dev_wm8900, &wm8900_dai, 1);
......
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