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Commit 9f7217ca authored by Abhijeet Dharmapurikar's avatar Abhijeet Dharmapurikar
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power: qpnp-smbcharger: Add support for voltage_max property 



Provide support to read or configure the float voltage of
the charger through POWER_SUPPLY_PROP_VOLTAGE_MAX property.

CRs-Fixed: 695481
Change-Id: Ib8b22fd937e504385a90bb1143e5364d08868460
Signed-off-by: default avatarSubbaraman Narayanamurthy <subbaram@codeaurora.org>
Signed-off-by: default avatarAbhijeet Dharmapurikar <adharmap@codeaurora.org>
parent a2560b98

drivers/power/qpnp-smbcharger.c

+71 −47
Original line number Diff line number Diff line
@@ -562,6 +562,7 @@ static enum power_supply_property smbchg_battery_properties[] = { 
	POWER_SUPPLY_PROP_SYSTEM_TEMP_LEVEL,

	POWER_SUPPLY_PROP_FLASH_CURRENT_MAX,

	POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX,

	POWER_SUPPLY_PROP_VOLTAGE_MAX,

	POWER_SUPPLY_PROP_CURRENT_NOW,

	POWER_SUPPLY_PROP_TEMP,

	POWER_SUPPLY_PROP_VOLTAGE_NOW,
@@ -1760,6 +1761,69 @@ static int smbchg_calc_max_flash_current(struct smbchg_chip *chip) 
	return (int)total_flash_ua;

}



#define VFLOAT_CFG_REG			0xF4

#define MIN_FLOAT_MV			3600

#define MAX_FLOAT_MV			4500

#define VFLOAT_MASK			SMB_MASK(5, 0)



#define MID_RANGE_FLOAT_MV_MIN		3600

#define MID_RANGE_FLOAT_MIN_VAL		0x05

#define MID_RANGE_FLOAT_STEP_MV		20



#define HIGH_RANGE_FLOAT_MIN_MV		4340

#define HIGH_RANGE_FLOAT_MIN_VAL	0x2A

#define HIGH_RANGE_FLOAT_STEP_MV	10



#define VHIGH_RANGE_FLOAT_MIN_MV	4360

#define VHIGH_RANGE_FLOAT_MIN_VAL	0x2C

#define VHIGH_RANGE_FLOAT_STEP_MV	20

static int smbchg_float_voltage_set(struct smbchg_chip *chip, int vfloat_mv)

{

	int rc, delta;

	u8 temp;



	if ((vfloat_mv < MIN_FLOAT_MV) || (vfloat_mv > MAX_FLOAT_MV)) {

		dev_err(chip->dev, "bad float voltage mv =%d asked to set\n",

					vfloat_mv);

		return -EINVAL;

	}



	if (vfloat_mv <= HIGH_RANGE_FLOAT_MIN_MV) {

		/* mid range */

		delta = vfloat_mv - MID_RANGE_FLOAT_MV_MIN;

		temp = MID_RANGE_FLOAT_MIN_VAL + delta

				/ MID_RANGE_FLOAT_STEP_MV;

		vfloat_mv -= delta % MID_RANGE_FLOAT_STEP_MV;

	} else if (vfloat_mv <= VHIGH_RANGE_FLOAT_MIN_MV) {

		/* high range */

		delta = vfloat_mv - HIGH_RANGE_FLOAT_MIN_MV;

		temp = HIGH_RANGE_FLOAT_MIN_VAL + delta

				/ HIGH_RANGE_FLOAT_STEP_MV;

		vfloat_mv -= delta % HIGH_RANGE_FLOAT_STEP_MV;

	} else {

		/* very high range */

		delta = vfloat_mv - VHIGH_RANGE_FLOAT_MIN_MV;

		temp = VHIGH_RANGE_FLOAT_MIN_VAL + delta

				/ VHIGH_RANGE_FLOAT_STEP_MV;

		vfloat_mv -= delta % VHIGH_RANGE_FLOAT_STEP_MV;

	}



	rc = smbchg_sec_masked_write(chip, chip->chgr_base + VFLOAT_CFG_REG,

			VFLOAT_MASK, temp);



	if (rc)

		dev_err(chip->dev, "Couldn't set float voltage rc = %d\n", rc);

	else

		chip->vfloat_mv = vfloat_mv;



	return rc;

}



static int smbchg_float_voltage_get(struct smbchg_chip *chip)

{

	return chip->vfloat_mv;

}



static int smbchg_battery_set_property(struct power_supply *psy,

				       enum power_supply_property prop,

				       const union power_supply_propval *val)
@@ -1785,6 +1849,9 @@ static int smbchg_battery_set_property(struct power_supply *psy, 
	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX:

		rc = smbchg_set_fastchg_current(chip, val->intval / 1000);

		break;

	case POWER_SUPPLY_PROP_VOLTAGE_MAX:

		rc = smbchg_float_voltage_set(chip, val->intval);

		break;

	default:

		return -EINVAL;

	}
@@ -1802,6 +1869,7 @@ static int smbchg_battery_is_writeable(struct power_supply *psy, 
	case POWER_SUPPLY_PROP_CAPACITY:

	case POWER_SUPPLY_PROP_SYSTEM_TEMP_LEVEL:

	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX:

	case POWER_SUPPLY_PROP_VOLTAGE_MAX:

		rc = 1;

		break;

	default:
@@ -1831,6 +1899,9 @@ static int smbchg_battery_get_property(struct power_supply *psy, 
	case POWER_SUPPLY_PROP_CHARGE_TYPE:

		val->intval = get_prop_charge_type(chip);

		break;

	case POWER_SUPPLY_PROP_VOLTAGE_MAX:

		val->intval = smbchg_float_voltage_get(chip);

		break;

	case POWER_SUPPLY_PROP_HEALTH:

		val->intval = get_prop_batt_health(chip);

		break;
@@ -2026,53 +2097,6 @@ static void smbchg_external_power_changed(struct power_supply *psy) 
	power_supply_changed(&chip->batt_psy);

}



#define VFLOAT_CFG_REG			0xF4

#define MIN_FLOAT_MV			3600

#define MAX_FLOAT_MV			4500

#define VFLOAT_MASK			SMB_MASK(5, 0)



#define MID_RANGE_FLOAT_MV_MIN		3600

#define MID_RANGE_FLOAT_MIN_VAL		0x05

#define MID_RANGE_FLOAT_STEP_MV		20



#define HIGH_RANGE_FLOAT_MIN_MV		4340

#define HIGH_RANGE_FLOAT_MIN_VAL	0x2A

#define HIGH_RANGE_FLOAT_STEP_MV	10



#define VHIGH_RANGE_FLOAT_MIN_MV	4360

#define VHIGH_RANGE_FLOAT_MIN_VAL	0x2C

#define VHIGH_RANGE_FLOAT_STEP_MV	20

static int smbchg_float_voltage_set(struct smbchg_chip *chip, int vfloat_mv)

{

	u8 temp;



	if ((vfloat_mv < MIN_FLOAT_MV) || (vfloat_mv > MAX_FLOAT_MV)) {

		dev_err(chip->dev, "bad float voltage mv =%d asked to set\n",

					vfloat_mv);

		return -EINVAL;

	}



	if (vfloat_mv <= HIGH_RANGE_FLOAT_MIN_MV) {

		/* mid range */

		temp = MID_RANGE_FLOAT_MIN_VAL

			+ (vfloat_mv - MID_RANGE_FLOAT_MV_MIN)

				/ MID_RANGE_FLOAT_STEP_MV;

	} else if (vfloat_mv <= VHIGH_RANGE_FLOAT_MIN_MV) {

		/* high range */

		temp = HIGH_RANGE_FLOAT_MIN_VAL

			+ (vfloat_mv - HIGH_RANGE_FLOAT_MIN_MV)

				/ HIGH_RANGE_FLOAT_STEP_MV;

	} else {

		/* very high range */

		temp = VHIGH_RANGE_FLOAT_MIN_VAL

			+ (vfloat_mv - VHIGH_RANGE_FLOAT_MIN_MV)

				/ VHIGH_RANGE_FLOAT_STEP_MV;

	}



	return smbchg_sec_masked_write(chip, chip->chgr_base + VFLOAT_CFG_REG,

			VFLOAT_MASK, temp);

}



#define OTG_EN		BIT(0)

static int smbchg_otg_regulator_enable(struct regulator_dev *rdev)

{