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Diffstat (limited to 'sound/soc/codecs/wm8900.c')
-rw-r--r--sound/soc/codecs/wm8900.c166
1 files changed, 98 insertions, 68 deletions
diff --git a/sound/soc/codecs/wm8900.c b/sound/soc/codecs/wm8900.c
index 077c9628c70d..e781f865e5d7 100644
--- a/sound/soc/codecs/wm8900.c
+++ b/sound/soc/codecs/wm8900.c
@@ -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,
@@ -469,10 +493,10 @@ SOC_DAPM_SINGLE("RINPUT2 Switch", WM8900_REG_INCTL, 1, 1, 0),
SOC_DAPM_SINGLE("RINPUT3 Switch", WM8900_REG_INCTL, 0, 1, 0),
};
-static const char *wm9700_lp_mux[] = { "Disabled", "Enabled" };
+static const char *wm8900_lp_mux[] = { "Disabled", "Enabled" };
static const struct soc_enum wm8900_lineout2_lp_mux =
-SOC_ENUM_SINGLE(WM8900_REG_LOUTMIXCTL1, 1, 2, wm9700_lp_mux);
+SOC_ENUM_SINGLE(WM8900_REG_LOUTMIXCTL1, 1, 2, wm8900_lp_mux);
static const struct snd_kcontrol_new wm8900_lineout2_lp =
SOC_DAPM_ENUM("Route", wm8900_lineout2_lp_mux);
@@ -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),
@@ -1220,30 +1234,44 @@ 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)
{
struct wm8900_priv *wm8900;
int ret;
- wm8900 = kzalloc(sizeof(struct wm8900_priv), GFP_KERNEL);
+ wm8900 = devm_kzalloc(&spi->dev, sizeof(struct wm8900_priv),
+ GFP_KERNEL);
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,
&soc_codec_dev_wm8900, &wm8900_dai, 1);
- if (ret < 0)
- kfree(wm8900);
+
return ret;
}
static int __devexit wm8900_spi_remove(struct spi_device *spi)
{
snd_soc_unregister_codec(&spi->dev);
- kfree(spi_get_drvdata(spi));
return 0;
}
@@ -1264,24 +1292,26 @@ static __devinit int wm8900_i2c_probe(struct i2c_client *i2c,
struct wm8900_priv *wm8900;
int ret;
- wm8900 = kzalloc(sizeof(struct wm8900_priv), GFP_KERNEL);
+ wm8900 = devm_kzalloc(&i2c->dev, sizeof(struct wm8900_priv),
+ GFP_KERNEL);
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);
- if (ret < 0)
- kfree(wm8900);
+
return ret;
}
static __devexit int wm8900_i2c_remove(struct i2c_client *client)
{
snd_soc_unregister_codec(&client->dev);
- kfree(i2c_get_clientdata(client));
return 0;
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.