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Commit 5f7bd35c authored by Anirudh Ghayal's avatar Anirudh Ghayal Committed by Gerrit - the friendly Code Review server
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power: qpnp-qg: Add support to display available power 



Add support to show the available power from battery parameters
through POWER_SUPPLY_PROP_POWER_NOW, POWER_SUPPLY_PROP_POWER_AVG
properties.

Change-Id: I8018f8033d05273320fd92cc7d21fcdce0885dfb
Signed-off-by: default avatarAnirudh Ghayal <aghayal@codeaurora.org>
parent dddb7d76

drivers/power/supply/qcom/qg-core.h

+1 −0
Original line number Diff line number Diff line
@@ -52,6 +52,7 @@ struct qg_dt { 
	int			esr_min_ibat_ua;

	int			shutdown_soc_threshold;

	int			min_sleep_time_secs;

	int			sys_min_volt_mv;

	bool			hold_soc_while_full;

	bool			linearize_soc;

	bool			cl_disable;

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

+63 −0
Original line number Diff line number Diff line
@@ -1612,6 +1612,54 @@ static int qg_get_charge_counter(struct qpnp_qg *chip, int *charge_counter) 
	return 0;

}



static int qg_get_power(struct qpnp_qg *chip, int *val, bool average)

{

	int rc, v_min, v_ocv, rbatt = 0, esr = 0;

	s64 power;



	if (is_debug_batt_id(chip)) {

		*val = -EINVAL;

		return 0;

	}



	v_min = chip->dt.sys_min_volt_mv * 1000;



	rc = qg_sdam_read(SDAM_OCV_UV, &v_ocv);

	if (rc < 0) {

		pr_err("Failed to read OCV rc=%d\n", rc);

		return rc;

	}



	rc = qg_sdam_read(SDAM_RBAT_MOHM, &rbatt);

	if (rc < 0) {

		pr_err("Failed to read T_RBAT rc=%d\n", rc);

		return rc;

	}



	rbatt *= 1000;	/* uohms */

	esr = chip->esr_last * 1000;



	if (rbatt <= 0 || esr <= 0) {

		pr_debug("Invalid rbatt/esr rbatt=%d esr=%d\n", rbatt, esr);

		*val = -EINVAL;

		return 0;

	}



	power = (s64)v_min * (v_ocv - v_min);



	if (average)

		power = div_s64(power, rbatt);

	else

		power = div_s64(power, esr);



	*val = power;



	qg_dbg(chip, QG_DEBUG_STATUS, "v_min=%d v_ocv=%d rbatt=%d esr=%d power=%lld\n",

			v_min, v_ocv, rbatt, esr, power);



	return 0;

}



static int qg_get_ttf_param(void *data, enum ttf_param param, int *val)

{

	union power_supply_propval prop = {0, };
@@ -1942,6 +1990,12 @@ static int qg_psy_get_property(struct power_supply *psy, 
	case POWER_SUPPLY_PROP_VOLTAGE_AVG:

		rc = qg_get_vbat_avg(chip, &pval->intval);

		break;

	case POWER_SUPPLY_PROP_POWER_NOW:

		rc = qg_get_power(chip, &pval->intval, false);

		break;

	case POWER_SUPPLY_PROP_POWER_AVG:

		rc = qg_get_power(chip, &pval->intval, true);

		break;

	default:

		pr_debug("Unsupported property %d\n", psp);

		break;
@@ -1997,6 +2051,8 @@ static enum power_supply_property qg_psy_props[] = { 
	POWER_SUPPLY_PROP_CC_SOC,

	POWER_SUPPLY_PROP_FG_RESET,

	POWER_SUPPLY_PROP_VOLTAGE_AVG,

	POWER_SUPPLY_PROP_POWER_AVG,

	POWER_SUPPLY_PROP_POWER_NOW,

};



static const struct power_supply_desc qg_psy_desc = {
@@ -3420,6 +3476,7 @@ static void qg_create_debugfs(struct qpnp_qg *chip) 
#define DEFAULT_ESR_DISABLE_SOC		1000

#define ESR_CHG_MIN_IBAT_UA		(-450000)

#define DEFAULT_SLEEP_TIME_SECS		1800 /* 30 mins */

#define DEFAULT_SYS_MIN_VOLT_MV		2800

static int qg_parse_dt(struct qpnp_qg *chip)

{

	int rc = 0;
@@ -3656,6 +3713,12 @@ static int qg_parse_dt(struct qpnp_qg *chip) 
	else

		chip->dt.shutdown_soc_threshold = temp;



	rc = of_property_read_u32(node, "qcom,qg-sys-min-voltage", &temp);

	if (rc < 0)

		chip->dt.sys_min_volt_mv = DEFAULT_SYS_MIN_VOLT_MV;

	else

		chip->dt.sys_min_volt_mv = temp;



	chip->dt.qg_ext_sense = of_property_read_bool(node, "qcom,qg-ext-sns");



	chip->dt.use_s7_ocv = of_property_read_bool(node, "qcom,qg-use-s7-ocv");