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Commit 7d016c8f authored by Sahil Chandna's avatar Sahil Chandna Committed by Subbaraman Narayanamurthy
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power: qpnp-fg-gen4: Support OCV based step charging in TTF algorithm 



Currently TTF algorithm support Vbatt based step charging, but since
oscillation in Vbatt is high when the load changes abruptly we have
moved to OCV based step charging. Add support for OCV based step charging
when TTF algorithm queries for mode and OCV value.

Change-Id: Iefffc864ba362aed53c1b486c25731a140a5b000
Signed-off-by: default avatarSahil Chandna <chandna@codeaurora.org>
Signed-off-by: default avatarSubbaraman Narayanamurthy <subbaram@codeaurora.org>
parent a46b2b4c

drivers/power/supply/qcom/qpnp-fg-gen4.c

+13 −0
Original line number Diff line number Diff line
@@ -1057,6 +1057,11 @@ static int fg_gen4_get_ttf_param(void *data, enum ttf_param param, int *val) 
	case TTF_VBAT:

		rc = fg_get_battery_voltage(fg, val);

		break;

	case TTF_OCV:

		rc = fg_get_sram_prop(fg, FG_SRAM_OCV, val);

		if (rc < 0)

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

		break;

	case TTF_IBAT:

		rc = fg_get_battery_current(fg, val);

		break;
@@ -1090,6 +1095,8 @@ static int fg_gen4_get_ttf_param(void *data, enum ttf_param param, int *val) 
			*val = TTF_MODE_QNOVO;

		else if (chip->ttf->step_chg_cfg_valid)

			*val = TTF_MODE_V_STEP_CHG;

		else if (chip->ttf->ocv_step_chg_cfg_valid)

			*val = TTF_MODE_OCV_STEP_CHG;

		else

			*val = TTF_MODE_NORMAL;

		break;
@@ -1595,6 +1602,12 @@ static int qpnp_fg_gen4_get_step_charging_params(struct fg_gen4_chip *chip, 


		chip->ttf->step_chg_num_params = tuple_len;

		chip->ttf->step_chg_cfg_valid = true;

		if (of_property_read_bool(profile_node,

					   "qcom,ocv-based-step-chg")) {

			chip->ttf->step_chg_cfg_valid = false;

			chip->ttf->ocv_step_chg_cfg_valid = true;

		}



		mutex_unlock(&chip->ttf->lock);



		if (chip->ttf->step_chg_cfg_valid) {