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Commit 11979285 authored by Sahil Chandna's avatar Sahil Chandna
Browse files

power: smb5: Add support for thermal mitigation for CC Mode 



Add support for thermal mitigation for Triple charging in CC mode.
Poll thermal status of SMB, charger, skin and connector periodically
and generate a power supply event to notify user space to handle
thermal mitigation.

Change-Id: I4908cf2a148c017ba67ff6759640aac67c324406
Signed-off-by: default avatarSahil Chandna <chandna@codeaurora.org>
parent 4c6c4e79

drivers/power/supply/qcom/qpnp-smb5.c

+26 −0
Original line number Diff line number Diff line
@@ -548,12 +548,18 @@ static int smb5_parse_dt_misc(struct smb5 *chip, struct device_node *node) 
	chg->hw_skin_temp_mitigation = of_property_read_bool(node,

					"qcom,hw-skin-temp-mitigation");



	chg->en_skin_therm_mitigation = of_property_read_bool(node,

					"qcom,en-skin-therm-mitigation");



	chg->connector_pull_up = -EINVAL;

	of_property_read_u32(node, "qcom,connector-internal-pull-kohm",

					&chg->connector_pull_up);



	chip->dt.disable_suspend_on_collapse = of_property_read_bool(node,

					"qcom,disable-suspend-on-collapse");

	chg->smb_pull_up = -EINVAL;

	of_property_read_u32(node, "qcom,smb-internal-pull-kohm",

					&chg->smb_pull_up);



	chip->dt.adc_based_aicl = of_property_read_bool(node,

					"qcom,adc-based-aicl");
@@ -777,6 +783,7 @@ static enum power_supply_property smb5_usb_props[] = { 
	POWER_SUPPLY_PROP_QC_OPTI_DISABLE,

	POWER_SUPPLY_PROP_VOLTAGE_VPH,

	POWER_SUPPLY_PROP_THERM_ICL_LIMIT,

	POWER_SUPPLY_PROP_SKIN_HEALTH,

};



static int smb5_usb_get_prop(struct power_supply *psy,
@@ -917,6 +924,9 @@ static int smb5_usb_get_prop(struct power_supply *psy, 
	case POWER_SUPPLY_PROP_ADAPTER_CC_MODE:

		val->intval = chg->adapter_cc_mode;

		break;

	case POWER_SUPPLY_PROP_SKIN_HEALTH:

		val->intval = smblib_get_skin_temp_status(chg);

		break;

	default:

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

		rc = -EINVAL;
@@ -1178,6 +1188,7 @@ static enum power_supply_property smb5_usb_main_props[] = { 
	POWER_SUPPLY_PROP_FORCE_MAIN_FCC,

	POWER_SUPPLY_PROP_FORCE_MAIN_ICL,

	POWER_SUPPLY_PROP_COMP_CLAMP_LEVEL,

	POWER_SUPPLY_PROP_HEALTH,

};



static int smb5_usb_main_get_prop(struct power_supply *psy,
@@ -1237,6 +1248,10 @@ static int smb5_usb_main_get_prop(struct power_supply *psy, 
	case POWER_SUPPLY_PROP_COMP_CLAMP_LEVEL:

		val->intval = chg->comp_clamp_level;

		break;

	/* Use this property to report SMB health */

	case POWER_SUPPLY_PROP_HEALTH:

		val->intval = smblib_get_prop_smb_health(chg);

		break;

	default:

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

		rc = -EINVAL;
@@ -2709,6 +2724,17 @@ static int smb5_init_hw(struct smb5 *chip) 
		}

	}



	if (chg->smb_pull_up != -EINVAL) {

		rc = smb5_configure_internal_pull(chg, SMB_THERM,

				get_valid_pullup(chg->smb_pull_up));

		if (rc < 0) {

			dev_err(chg->dev,

				"Couldn't configure SMB pull-up rc=%d\n",

				rc);

			return rc;

		}

	}



	return rc;

}

drivers/power/supply/qcom/smb5-lib.c

+52 −1
Original line number Diff line number Diff line
@@ -3757,6 +3757,54 @@ int smblib_get_pe_start(struct smb_charger *chg, 
	return 0;

}



int smblib_get_prop_smb_health(struct smb_charger *chg)

{

	int rc;

	u8 stat;

	int input_present;



	rc = smblib_is_input_present(chg, &input_present);

	if (rc < 0)

		return rc;



	if (input_present == INPUT_NOT_PRESENT)

		return POWER_SUPPLY_HEALTH_UNKNOWN;



	if (chg->wa_flags & SW_THERM_REGULATION_WA) {

		if (chg->smb_temp == -ENODATA)

			return POWER_SUPPLY_HEALTH_UNKNOWN;



		if (chg->smb_temp > SMB_TEMP_RST_THRESH)

			return POWER_SUPPLY_HEALTH_OVERHEAT;



		if (chg->smb_temp > SMB_TEMP_REG_H_THRESH)

			return POWER_SUPPLY_HEALTH_HOT;



		if (chg->smb_temp > SMB_TEMP_REG_L_THRESH)

			return POWER_SUPPLY_HEALTH_WARM;



		return POWER_SUPPLY_HEALTH_COOL;

	}



	rc = smblib_read(chg, SMB_TEMP_STATUS_REG, &stat);

	if (rc < 0) {

		smblib_err(chg, "Couldn't read SMB_TEMP_STATUS_REG, rc=%d\n",

				rc);

		return POWER_SUPPLY_HEALTH_UNKNOWN;

	}



	if (stat & SMB_TEMP_RST_BIT)

		return POWER_SUPPLY_HEALTH_OVERHEAT;



	if (stat & SMB_TEMP_UB_BIT)

		return POWER_SUPPLY_HEALTH_HOT;



	if (stat & SMB_TEMP_LB_BIT)

		return POWER_SUPPLY_HEALTH_WARM;



	return POWER_SUPPLY_HEALTH_COOL;

}



int smblib_get_prop_die_health(struct smb_charger *chg)

{

	int rc;
@@ -3877,11 +3925,14 @@ static int smblib_get_typec_connector_temp_status(struct smb_charger *chg) 
	return POWER_SUPPLY_HEALTH_COOL;

}



static int smblib_get_skin_temp_status(struct smb_charger *chg)

int smblib_get_skin_temp_status(struct smb_charger *chg)

{

	int rc;

	u8 stat;



	if (!chg->en_skin_therm_mitigation)

		return POWER_SUPPLY_HEALTH_UNKNOWN;



	rc = smblib_read(chg, SKIN_TEMP_STATUS_REG, &stat);

	if (rc < 0) {

		smblib_err(chg, "Couldn't read SKIN_TEMP_STATUS_REG, rc=%d\n",

drivers/power/supply/qcom/smb5-lib.h

+4 −0
Original line number Diff line number Diff line
@@ -523,7 +523,9 @@ struct smb_charger { 
	bool			hw_die_temp_mitigation;

	bool			hw_connector_mitigation;

	bool			hw_skin_temp_mitigation;

	bool			en_skin_therm_mitigation;

	int			connector_pull_up;

	int			smb_pull_up;

	int			aicl_5v_threshold_mv;

	int			default_aicl_5v_threshold_mv;

	int			aicl_cont_threshold_mv;
@@ -723,7 +725,9 @@ int smblib_get_prop_charger_temp(struct smb_charger *chg, 
int smblib_get_prop_die_health(struct smb_charger *chg);

int smblib_get_die_health(struct smb_charger *chg,

				union power_supply_propval *val);

int smblib_get_prop_smb_health(struct smb_charger *chg);

int smblib_get_prop_connector_health(struct smb_charger *chg);

int smblib_get_skin_temp_status(struct smb_charger *chg);

int smblib_get_prop_vph_voltage_now(struct smb_charger *chg,

				union power_supply_propval *val);

int smblib_set_prop_pd_current_max(struct smb_charger *chg,

drivers/power/supply/qcom/smb5-reg.h

+6 −0
Original line number Diff line number Diff line
@@ -486,6 +486,12 @@ enum { 
#define CONNECTOR_TEMP_UB_BIT			BIT(1)

#define CONNECTOR_TEMP_LB_BIT			BIT(0)



#define SMB_TEMP_STATUS_REG			(MISC_BASE + 0x0A)

#define SMB_TEMP_SHDN_BIT			BIT(3)

#define SMB_TEMP_RST_BIT			BIT(2)

#define SMB_TEMP_UB_BIT				BIT(1)

#define SMB_TEMP_LB_BIT				BIT(0)



#define BARK_BITE_WDOG_PET_REG			(MISC_BASE + 0x43)

#define BARK_BITE_WDOG_PET_BIT			BIT(0)