@@ -21,6 +21,10 @@ Optional properties:
- dlg,dmic-clkrate : DMIC clock frequency (Hz).
[<1500000>, <3000000>]
+ - VDDA-supply : Regulator phandle for Analogue power supply
+ - VDDMIC-supply : Regulator phandle for Mic Bias
+ - VDDIO-supply : Regulator phandle for I/O power supply
+
======
Example:
@@ -19,6 +19,7 @@
#include <linux/module.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
+#include <linux/pm_runtime.h>
#include <sound/soc.h>
#include <sound/initval.h>
#include <sound/tlv.h>
@@ -806,6 +807,11 @@ static int da7213_dai_event(struct snd_soc_dapm_widget *w,
*/
static const struct snd_soc_dapm_widget da7213_dapm_widgets[] = {
+ /*
+ * Power Supply
+ */
+ SND_SOC_DAPM_REGULATOR_SUPPLY("VDDMIC", 0, 0),
+
/*
* Input & Output
*/
@@ -932,6 +938,9 @@ static const struct snd_soc_dapm_route da7213_audio_map[] = {
/* Dest Connecting Widget source */
/* Input path */
+ {"Mic Bias 1", NULL, "VDDMIC"},
+ {"Mic Bias 2", NULL, "VDDMIC"},
+
{"MIC1", NULL, "Mic Bias 1"},
{"MIC2", NULL, "Mic Bias 2"},
@@ -1691,6 +1700,8 @@ static int da7213_probe(struct snd_soc_component *component)
{
struct da7213_priv *da7213 = snd_soc_component_get_drvdata(component);
+ pm_runtime_get_sync(component->dev);
+
/* Default to using ALC auto offset calibration mode. */
snd_soc_component_update_bits(component, DA7213_ALC_CTRL1,
DA7213_ALC_CALIB_MODE_MAN, 0);
@@ -1811,6 +1822,8 @@ static int da7213_probe(struct snd_soc_component *component)
DA7213_DMIC_CLK_RATE_MASK, dmic_cfg);
}
+ pm_runtime_put_sync(component->dev);
+
/* Check if MCLK provided */
da7213->mclk = devm_clk_get(component->dev, "mclk");
if (IS_ERR(da7213->mclk)) {
@@ -1848,11 +1861,22 @@ static const struct regmap_config da7213_regmap_config = {
.cache_type = REGCACHE_RBTREE,
};
+static void da7213_power_off(void *data)
+{
+ struct da7213_priv *da7213 = data;
+ regulator_bulk_disable(DA7213_NUM_SUPPLIES, da7213->supplies);
+}
+
+static const char *da7213_supply_names[DA7213_NUM_SUPPLIES] = {
+ [DA7213_SUPPLY_VDDA] = "VDDA",
+ [DA7213_SUPPLY_VDDIO] = "VDDIO",
+};
+
static int da7213_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct da7213_priv *da7213;
- int ret;
+ int i, ret;
da7213 = devm_kzalloc(&i2c->dev, sizeof(*da7213), GFP_KERNEL);
if (!da7213)
@@ -1860,6 +1884,25 @@ static int da7213_i2c_probe(struct i2c_client *i2c,
i2c_set_clientdata(i2c, da7213);
+ /* Get required supplies */
+ for (i = 0; i < DA7213_NUM_SUPPLIES; ++i)
+ da7213->supplies[i].supply = da7213_supply_names[i];
+
+ ret = devm_regulator_bulk_get(&i2c->dev, DA7213_NUM_SUPPLIES,
+ da7213->supplies);
+ if (ret) {
+ dev_err(&i2c->dev, "Failed to get supplies: %d\n", ret);
+ return ret;
+ }
+
+ ret = regulator_bulk_enable(DA7213_NUM_SUPPLIES, da7213->supplies);
+ if (ret < 0)
+ return ret;
+
+ ret = devm_add_action_or_reset(&i2c->dev, da7213_power_off, da7213);
+ if (ret < 0)
+ return ret;
+
da7213->regmap = devm_regmap_init_i2c(i2c, &da7213_regmap_config);
if (IS_ERR(da7213->regmap)) {
ret = PTR_ERR(da7213->regmap);
@@ -1867,6 +1910,11 @@ static int da7213_i2c_probe(struct i2c_client *i2c,
return ret;
}
+ pm_runtime_set_autosuspend_delay(&i2c->dev, 100);
+ pm_runtime_use_autosuspend(&i2c->dev);
+ pm_runtime_set_active(&i2c->dev);
+ pm_runtime_enable(&i2c->dev);
+
ret = devm_snd_soc_register_component(&i2c->dev,
&soc_component_dev_da7213, &da7213_dai, 1);
if (ret < 0) {
@@ -1876,6 +1924,34 @@ static int da7213_i2c_probe(struct i2c_client *i2c,
return ret;
}
+static int __maybe_unused da7213_runtime_suspend(struct device *dev)
+{
+ struct da7213_priv *da7213 = dev_get_drvdata(dev);
+
+ regcache_cache_only(da7213->regmap, true);
+ regcache_mark_dirty(da7213->regmap);
+ regulator_bulk_disable(DA7213_NUM_SUPPLIES, da7213->supplies);
+
+ return 0;
+}
+
+static int __maybe_unused da7213_runtime_resume(struct device *dev)
+{
+ struct da7213_priv *da7213 = dev_get_drvdata(dev);
+ int ret;
+
+ ret = regulator_bulk_enable(DA7213_NUM_SUPPLIES, da7213->supplies);
+ if (ret < 0)
+ return ret;
+ regcache_cache_only(da7213->regmap, false);
+ regcache_sync(da7213->regmap);
+ return 0;
+}
+
+static const struct dev_pm_ops da7213_pm = {
+ SET_RUNTIME_PM_OPS(da7213_runtime_suspend, da7213_runtime_resume, NULL)
+};
+
static const struct i2c_device_id da7213_i2c_id[] = {
{ "da7213", 0 },
{ }
@@ -1888,6 +1964,7 @@ static struct i2c_driver da7213_i2c_driver = {
.name = "da7213",
.of_match_table = of_match_ptr(da7213_of_match),
.acpi_match_table = ACPI_PTR(da7213_acpi_match),
+ .pm = &da7213_pm,
},
.probe = da7213_i2c_probe,
.id_table = da7213_i2c_id,
@@ -12,6 +12,7 @@
#include <linux/clk.h>
#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
#include <sound/da7213.h>
/*
@@ -521,9 +522,17 @@ enum da7213_sys_clk {
DA7213_SYSCLK_PLL_32KHZ
};
+/* Regulators */
+enum da7213_supplies {
+ DA7213_SUPPLY_VDDA = 0,
+ DA7213_SUPPLY_VDDIO,
+ DA7213_NUM_SUPPLIES,
+};
+
/* Codec private data */
struct da7213_priv {
struct regmap *regmap;
+ struct regulator_bulk_data supplies[DA7213_NUM_SUPPLIES];
struct clk *mclk;
unsigned int mclk_rate;
int clk_src;