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-rw-r--r--drivers/mfd/arizona-core.c23
-rw-r--r--include/linux/mfd/arizona/pdata.h12
2 files changed, 35 insertions, 0 deletions
diff --git a/drivers/mfd/arizona-core.c b/drivers/mfd/arizona-core.c
index 317ba0a4ea25..b562c7bf8a46 100644
--- a/drivers/mfd/arizona-core.c
+++ b/drivers/mfd/arizona-core.c
@@ -510,6 +510,29 @@ int arizona_dev_init(struct arizona *arizona)
goto err_reset;
}
+ for (i = 0; i < ARIZONA_MAX_MICBIAS; i++) {
+ if (!arizona->pdata.micbias[i].mV)
+ continue;
+
+ val = (arizona->pdata.micbias[i].mV - 1500) / 100;
+ val <<= ARIZONA_MICB1_LVL_SHIFT;
+
+ if (arizona->pdata.micbias[i].ext_cap)
+ val |= ARIZONA_MICB1_EXT_CAP;
+
+ if (arizona->pdata.micbias[i].discharge)
+ val |= ARIZONA_MICB1_DISCH;
+
+ if (arizona->pdata.micbias[i].fast_start)
+ val |= ARIZONA_MICB1_RATE;
+
+ regmap_update_bits(arizona->regmap,
+ ARIZONA_MIC_BIAS_CTRL_1 + i,
+ ARIZONA_MICB1_LVL_MASK |
+ ARIZONA_MICB1_DISCH |
+ ARIZONA_MICB1_RATE, val);
+ }
+
for (i = 0; i < ARIZONA_MAX_INPUT; i++) {
/* Default for both is 0 so noop with defaults */
val = arizona->pdata.dmic_ref[i]
diff --git a/include/linux/mfd/arizona/pdata.h b/include/linux/mfd/arizona/pdata.h
index 8b1d1daaae16..37894d6a4f6f 100644
--- a/include/linux/mfd/arizona/pdata.h
+++ b/include/linux/mfd/arizona/pdata.h
@@ -56,6 +56,8 @@
#define ARIZONA_DMIC_MICBIAS2 2
#define ARIZONA_DMIC_MICBIAS3 3
+#define ARIZONA_MAX_MICBIAS 3
+
#define ARIZONA_INMODE_DIFF 0
#define ARIZONA_INMODE_SE 1
#define ARIZONA_INMODE_DMIC 2
@@ -69,6 +71,13 @@
struct regulator_init_data;
+struct arizona_micbias {
+ int mV; /** Regulated voltage */
+ unsigned int ext_cap:1; /** External capacitor fitted */
+ unsigned int discharge:1; /** Actively discharge */
+ unsigned int fast_start:1; /** Enable aggressive startup ramp rate */
+};
+
struct arizona_micd_config {
unsigned int src;
unsigned int bias;
@@ -106,6 +115,9 @@ struct arizona_pdata {
/** Reference voltage for DMIC inputs */
int dmic_ref[ARIZONA_MAX_INPUT];
+ /** MICBIAS configurations */
+ struct arizona_micbias micbias[ARIZONA_MAX_MICBIAS];
+
/** Mode of input structures */
int inmode[ARIZONA_MAX_INPUT];