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Commit 3d91f828 authored by Mark Brown's avatar Mark Brown Committed by Samuel Ortiz
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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: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: default avatarSamuel Ortiz <sameo@linux.intel.com>
parent 648a9880

drivers/mfd/arizona-core.c

+23 −0
Original line number Diff line number Diff line
@@ -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]

include/linux/mfd/arizona/pdata.h

+12 −0
Original line number Diff line number Diff line
@@ -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];