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mfd: arizona: Provide platform data for MICBIAS configuration 

Allow the MICBIAS voltages and other attributes to be configured by the
platform.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Mark Brown 2013-01-29 00:47:37 +08:00 committed by Samuel Ortiz
parent 648a98808c
commit 3d91f8282c
2 changed files with 35 additions and 0 deletions
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23
drivers/mfd/arizona-core.c
View File

@ -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]

12
include/linux/mfd/arizona/pdata.h
View File

@ -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];