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Commit 9314c652 authored by Anirudh Ghayal's avatar Anirudh Ghayal
Browse files

power: smblite/smb5-lib.c: Report the correct battery status at SOC=0 



Userspace initiates a shutdown if battery_status != charging
and SOC = 0, this is to prevent a deep-discharge of the battery
when the discharge current is higher than the charge current
at SOC = 0. Report this status from the kernel driver.

Change-Id: If7dd806e6427b65427d5999bb9ccda7098ec6101
Signed-off-by: default avatarAnirudh Ghayal <aghayal@codeaurora.org>
parent fb2b7441

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

+24 −1
Original line number Diff line number Diff line
@@ -1963,13 +1963,14 @@ static bool is_charging_paused(struct smb_charger *chg) 
	return val & CHARGING_PAUSE_CMD_BIT;

}



#define CUTOFF_COUNT		3

int smblib_get_prop_batt_status(struct smb_charger *chg,

				union power_supply_propval *val)

{

	union power_supply_propval pval = {0, };

	bool usb_online, dc_online;

	u8 stat;

	int rc, suspend = 0;

	int rc, suspend = 0, input_present = 0;



	if (chg->fake_chg_status_on_debug_batt) {

		rc = smblib_get_prop_from_bms(chg,
@@ -1999,6 +2000,28 @@ int smblib_get_prop_batt_status(struct smb_charger *chg, 
		return 0;

	}



	/*

	 * If SOC = 0 and we are discharging with input connected, report

	 * the battery status as DISCHARGING.

	 */

	smblib_is_input_present(chg, &input_present);

	rc = smblib_get_prop_from_bms(chg, POWER_SUPPLY_PROP_CAPACITY, &pval);

	if (!rc && pval.intval == 0 && input_present) {

		rc = smblib_get_prop_from_bms(chg,

				POWER_SUPPLY_PROP_CURRENT_NOW, &pval);

		if (!rc && pval.intval > 0) {

			if (chg->cutoff_count > CUTOFF_COUNT) {

				val->intval = POWER_SUPPLY_STATUS_DISCHARGING;

				return 0;

			}

			chg->cutoff_count++;

		} else {

			chg->cutoff_count = 0;

		}

	} else {

		chg->cutoff_count = 0;

	}



	if (chg->dbc_usbov) {

		rc = smblib_get_prop_usb_present(chg, &pval);

		if (rc < 0) {

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

+1 −0
Original line number Diff line number Diff line
@@ -574,6 +574,7 @@ struct smb_charger { 
	int			init_thermal_ua;

	u32			comp_clamp_level;

	int			wls_icl_ua;

	int			cutoff_count;

	bool			dcin_aicl_done;

	bool			hvdcp3_standalone_config;

	bool			dcin_icl_user_set;

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

+25 −1
Original line number Diff line number Diff line
@@ -720,13 +720,14 @@ static bool is_charging_paused(struct smb_charger *chg) 
	return val & CHARGING_PAUSE_CMD_BIT;

}



#define CUTOFF_COUNT		3

int smblite_lib_get_prop_batt_status(struct smb_charger *chg,

				union power_supply_propval *val)

{

	union power_supply_propval pval = {0, };

	bool usb_online;

	u8 stat;

	int rc;

	int rc, input_present = 0;



	if (chg->fake_chg_status_on_debug_batt) {

		rc = smblite_lib_get_prop_from_bms(chg,
@@ -740,6 +741,29 @@ int smblite_lib_get_prop_batt_status(struct smb_charger *chg, 
		}

	}



	/*

	 * If SOC = 0 and we are discharging with input connected, report

	 * the battery status as DISCHARGING.

	 */

	smblite_lib_is_input_present(chg, &input_present);

	rc = smblite_lib_get_prop_from_bms(chg,

				POWER_SUPPLY_PROP_CAPACITY, &pval);

	if (!rc && pval.intval == 0 && input_present) {

		rc = smblite_lib_get_prop_from_bms(chg,

				POWER_SUPPLY_PROP_CURRENT_NOW, &pval);

		if (!rc && pval.intval > 0) {

			if (chg->cutoff_count > CUTOFF_COUNT) {

				val->intval = POWER_SUPPLY_STATUS_DISCHARGING;

				return 0;

			}

			chg->cutoff_count++;

		} else {

			chg->cutoff_count = 0;

		}

	} else {

		chg->cutoff_count = 0;

	}



	rc = smblite_lib_get_prop_usb_online(chg, &pval);

	if (rc < 0) {

		smblite_lib_err(chg, "Couldn't get usb online property rc=%d\n",

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

+1 −0
Original line number Diff line number Diff line
@@ -310,6 +310,7 @@ struct smb_charger { 
	int			jeita_soft_fv[2];

	int			aicl_5v_threshold_mv;

	int			default_aicl_5v_threshold_mv;

	int			cutoff_count;

	bool			aicl_max_reached;

	bool			pr_swap_in_progress;

	bool			ldo_mode;