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Commit 4e5c3775 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 for fast-charge config 



Add logic to allow re-configuring the FIFO length
based on charging status. This may be required
for fast-charging cases where SOC needs to be
tracked fine-grain.

Change-Id: I3e51dc34cea5c97a7f901d9981f908e35b8b0fb4
Signed-off-by: default avatarAnirudh Ghayal <aghayal@codeaurora.org>
parent 959a5bc8

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

+6 −3
Original line number Diff line number Diff line
@@ -39,6 +39,7 @@ struct qg_dt { 
	int			sleep_s2_fifo_length;

	int			sleep_s2_acc_length;

	int			sleep_s2_acc_intvl_ms;

	int			fast_chg_s2_fifo_length;

	int			ocv_timer_expiry_min;

	int			ocv_tol_threshold_uv;

	int			s3_entry_fifo_length;
@@ -65,6 +66,7 @@ struct qg_dt { 
	bool			qg_ext_sense;

	bool			use_s7_ocv;

	bool			qg_sleep_config;

	bool			qg_fast_chg_cfg;

};



struct qg_esr_data {
@@ -190,9 +192,10 @@ enum ocv_type { 
};



enum s2_state {

	S2_LOW_VBAT = BIT(0),

	S2_SLEEP = BIT(1),

	S2_DEFAULT = BIT(2),

	S2_FAST_CHARGING = BIT(0),

	S2_LOW_VBAT = BIT(1),

	S2_SLEEP = BIT(2),

	S2_DEFAULT = BIT(3),

};



enum debug_mask {

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

+42 −1
Original line number Diff line number Diff line
@@ -329,7 +329,9 @@ static int qg_config_s2_state(struct qpnp_qg *chip, 
		chip->s2_state_mask &= ~requested_state;



	/* define the priority of the states */

	if (chip->s2_state_mask & S2_LOW_VBAT)

	if (chip->s2_state_mask & S2_FAST_CHARGING)

		state = S2_FAST_CHARGING;

	else if (chip->s2_state_mask & S2_LOW_VBAT)

		state = S2_LOW_VBAT;

	else if (chip->s2_state_mask & S2_SLEEP)

		state = S2_SLEEP;
@@ -340,6 +342,11 @@ static int qg_config_s2_state(struct qpnp_qg *chip, 
		return 0;



	switch (state) {

	case S2_FAST_CHARGING:

		fifo_length = chip->dt.fast_chg_s2_fifo_length;

		acc_interval = chip->dt.s2_acc_intvl_ms;

		acc_length = chip->dt.s2_acc_length;

		break;

	case S2_LOW_VBAT:

		fifo_length = chip->dt.s2_vbat_low_fifo_length;

		acc_interval = chip->dt.s2_acc_intvl_ms;
@@ -764,6 +771,22 @@ static int qg_vbat_thresholds_config(struct qpnp_qg *chip) 
	return rc;

}



static int qg_fast_charge_config(struct qpnp_qg *chip)

{

	int rc = 0;



	if (!chip->dt.qg_fast_chg_cfg)

		return 0;



	rc = qg_config_s2_state(chip, S2_FAST_CHARGING,

			(chip->charge_status == POWER_SUPPLY_STATUS_CHARGING)

			? true : false, false);

	if (rc < 0)

		pr_err("Failed to exit S2_SLEEP rc=%d\n", rc);



	return rc;

}



static void qg_retrieve_esr_params(struct qpnp_qg *chip)

{

	u32 data = 0;
@@ -1227,6 +1250,10 @@ static irqreturn_t qg_fifo_update_done_handler(int irq, void *data) 
	if (rc < 0)

		pr_err("Failed to apply VBAT EMPTY config rc=%d\n", rc);



	rc = qg_fast_charge_config(chip);

	if (rc < 0)

		pr_err("Failed to apply fast-charge config rc=%d\n", rc);



	rc = qg_vbat_low_wa(chip);

	if (rc < 0) {

		pr_err("Failed to apply VBAT LOW WA, rc=%d\n", rc);
@@ -3559,6 +3586,7 @@ static void qg_create_debugfs(struct qpnp_qg *chip) 
#define DEFAULT_SLEEP_S2_FIFO_LENGTH	8

#define DEFAULT_SLEEP_S2_ACC_LENGTH	256

#define DEFAULT_SLEEP_S2_ACC_INTVL_MS	200

#define DEFAULT_FAST_CHG_S2_FIFO_LENGTH	1

static int qg_parse_s2_dt(struct qpnp_qg *chip)

{

	int rc;
@@ -3623,6 +3651,19 @@ static int qg_parse_s2_dt(struct qpnp_qg *chip) 
			chip->dt.sleep_s2_acc_intvl_ms = temp;

	}



	if (of_property_read_bool(node, "qcom,qg-fast-chg-config")) {



		chip->dt.qg_fast_chg_cfg = true;



		rc = of_property_read_u32(node,

				"qcom,fast-chg-s2-fifo-length", &temp);

		if (rc < 0)

			chip->dt.fast_chg_s2_fifo_length =

					DEFAULT_FAST_CHG_S2_FIFO_LENGTH;

		else

			chip->dt.fast_chg_s2_fifo_length = temp;

	}



	return 0;

}