Merge "power: battery: Fix taper charge handling" (1f137f10) · Commits · e / devices / android_kernel_oneplus_sm8150

drivers/power/supply/qcom/battery.c

+21 −19

Original line number	Diff line number	Diff line
		@@ -601,6 +601,25 @@ static void pl_taper_work(struct work_struct *work)
		goto done;
		}

		/*
		* Due to reduction of float voltage in JEITA condition taper
		* charging can be initiated at a lower FV. On removal of JEITA
		* condition, FV readjusts itself. However, once taper charging
		* is initiated, it doesn't exits until parallel chaging is
		* disabled due to which FCC doesn't scale back to its original
		* value, leading to slow charging thereafter.
		* Check if FV increases in comparison to FV at which taper
		* charging was initiated, and if yes, exit taper charging.
		*/
		if (get_effective_result(chip->fv_votable) >
		chip->taper_entry_fv) {
		pl_dbg(chip, PR_PARALLEL, "Float voltage increased. Exiting taper\n");
		goto done;
		} else {
		chip->taper_entry_fv =
		get_effective_result(chip->fv_votable);
		}

		rc = power_supply_get_property(chip->batt_psy,
		POWER_SUPPLY_PROP_CHARGE_TYPE, &pval);
		if (rc < 0) {
		@@ -625,27 +644,10 @@ static void pl_taper_work(struct work_struct *work)
		eff_fcc_ua);
		vote(chip->fcc_votable, TAPER_STEPPER_VOTER,
		true, eff_fcc_ua);
		} else {
		/*
		* Due to reduction of float voltage in JEITA condition
		* taper charging can be initiated at a lower FV. On
		* removal of JEITA condition, FV readjusts itself.
		* However, once taper charging is initiated, it doesn't
		* exits until parallel chaging is disabled due to which
		* FCC doesn't scale back to its original value, leading
		* to slow charging thereafter.
		* Check if FV increases in comparison to FV at which
		* taper charging was initiated, and if yes, exit taper
		* charging.
		*/
		if (get_effective_result(chip->fv_votable) >
		chip->taper_entry_fv) {
		pl_dbg(chip, PR_PARALLEL, "Float voltage increased. Exiting taper\n");
		goto done;
		} else {
		pl_dbg(chip, PR_PARALLEL, "master is fast charging; waiting for next taper\n");
		}
		}

		/* wait for the charger state to deglitch after FCC change */
		msleep(PL_TAPER_WORK_DELAY_MS);
		}