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Commit 53079cc9 authored by Umang Agrawal's avatar Umang Agrawal Committed by Shilpa Suresh
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power: qcom: smb2: Add toggle stat pin logic to toggle_stat property 



The SMB_EN pin of SMB1390 is connected to the STAT pin of the primary
charger. Hence, to prevent ILIM IRQ failure, toggle the stat pin to
reset SMB1390 using the toggle_stat property of the main power supply.

CRs-Fixed: 2200340.

Change-Id: I687d41ec9ab415d5403dc231a204b2c08bbba48a
Signed-off-by: default avatarUmang Agrawal <uagrawal@codeaurora.org>
parent bd5ffdac

drivers/power/supply/qcom/qpnp-smb2.c

+25 −0
Original line number Diff line number Diff line
@@ -711,6 +711,7 @@ static enum power_supply_property smb2_usb_main_props[] = { 
	POWER_SUPPLY_PROP_INPUT_VOLTAGE_SETTLED,

	POWER_SUPPLY_PROP_FCC_DELTA,

	POWER_SUPPLY_PROP_CURRENT_MAX,

	POWER_SUPPLY_PROP_TOGGLE_STAT,

	/*

	 * TODO move the TEMP and TEMP_MAX properties here,

	 * and update the thermal balancer to look here
@@ -748,6 +749,9 @@ static int smb2_usb_main_get_prop(struct power_supply *psy, 
	case POWER_SUPPLY_PROP_CURRENT_MAX:

		rc = smblib_get_icl_current(chg, &val->intval);

		break;

	case POWER_SUPPLY_PROP_TOGGLE_STAT:

		val->intval = 0;

		break;

	default:

		pr_debug("get prop %d is not supported in usb-main\n", psp);

		rc = -EINVAL;
@@ -778,6 +782,9 @@ static int smb2_usb_main_set_prop(struct power_supply *psy, 
	case POWER_SUPPLY_PROP_CURRENT_MAX:

		rc = smblib_set_icl_current(chg, val->intval);

		break;

	case POWER_SUPPLY_PROP_TOGGLE_STAT:

		rc = smblib_toggle_stat(chg, val->intval);

		break;

	default:

		pr_err("set prop %d is not supported\n", psp);

		rc = -EINVAL;
@@ -787,6 +794,23 @@ static int smb2_usb_main_set_prop(struct power_supply *psy, 
	return rc;

}



static int smb2_usb_main_prop_is_writeable(struct power_supply *psy,

				enum power_supply_property psp)

{

	int rc;



	switch (psp) {

	case POWER_SUPPLY_PROP_TOGGLE_STAT:

		rc = 1;

		break;

	default:

		rc = 0;

		break;

	}



	return rc;

}



static const struct power_supply_desc usb_main_psy_desc = {

	.name		= "main",

	.type		= POWER_SUPPLY_TYPE_MAIN,
@@ -794,6 +818,7 @@ static const struct power_supply_desc usb_main_psy_desc = { 
	.num_properties	= ARRAY_SIZE(smb2_usb_main_props),

	.get_property	= smb2_usb_main_get_prop,

	.set_property	= smb2_usb_main_set_prop,

	.property_is_writeable = smb2_usb_main_prop_is_writeable,

};



static int smb2_init_usb_main_psy(struct smb2 *chip)

drivers/power/supply/qcom/smb-lib.c

+42 −0
Original line number Diff line number Diff line
@@ -1106,6 +1106,48 @@ static int __smblib_set_prop_typec_power_role(struct smb_charger *chg, 
	return rc;

}



int smblib_toggle_stat(struct smb_charger *chg, int reset)

{

	int rc = 0;



	if (reset) {

		rc = smblib_masked_write(chg, STAT_CFG_REG,

			STAT_SW_OVERRIDE_CFG_BIT | STAT_SW_OVERRIDE_VALUE_BIT,

			STAT_SW_OVERRIDE_CFG_BIT | 0);

		if (rc < 0) {

			smblib_err(chg,

				"Couldn't pull STAT pin low rc=%d\n", rc);

			return rc;

		}



		/*

		 * A minimum of 20us delay is expected before switching on STAT

		 * pin

		 */

		usleep_range(20, 30);



		rc = smblib_masked_write(chg, STAT_CFG_REG,

			STAT_SW_OVERRIDE_CFG_BIT | STAT_SW_OVERRIDE_VALUE_BIT,

			STAT_SW_OVERRIDE_CFG_BIT | STAT_SW_OVERRIDE_VALUE_BIT);

		if (rc < 0) {

			smblib_err(chg,

				"Couldn't pull STAT pin high rc=%d\n", rc);

			return rc;

		}



		rc = smblib_masked_write(chg, STAT_CFG_REG,

			STAT_SW_OVERRIDE_CFG_BIT | STAT_SW_OVERRIDE_VALUE_BIT,

			0);

		if (rc < 0) {

			smblib_err(chg,

				"Couldn't set hardware control rc=%d\n", rc);

			return rc;

		}

	}



	return rc;

}



/*********************

 * VOTABLE CALLBACKS *

 *********************/

drivers/power/supply/qcom/smb-lib.h

+1 −0
Original line number Diff line number Diff line
@@ -542,6 +542,7 @@ int smblib_set_prop_pr_swap_in_progress(struct smb_charger *chg, 
				const union power_supply_propval *val);

int smblib_stat_sw_override_cfg(struct smb_charger *chg, bool override);

void smblib_usb_typec_change(struct smb_charger *chg);

int smblib_toggle_stat(struct smb_charger *chg, int reset);



int smblib_init(struct smb_charger *chg);

int smblib_deinit(struct smb_charger *chg);