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Commit da0b8635 authored Jan 14, 2019 by Subbaraman Narayanamurthy

power: qpnp-fg-gen4: Support configure skew in capacity learning algorithm



Capacity learning algorithm takes in a parameter to configure
skew if when specified by the user to offset the errors that
can be accumulated based on the charging nature. Add a device
tree parameter "qcom,cl-skew" to configure it.

CRs-Fixed: 2380759
Change-Id: Ib50b175a6079261627e4038811980329e3c66668
Signed-off-by: Subbaraman Narayanamurthy <subbaram@codeaurora.org>

parent ed8e2081

Documentation/devicetree/bindings/power/supply/qcom/qpnp-fg-gen4.txt

+6 −0

Original line number	Diff line number	Diff line
		@@ -269,6 +269,12 @@ First Level Node - FG Gen4 device
		based on change in battery SOC during a charging cycle.
		If this is specified "qcom,cl-start-capacity" is not used.

		- qcom,cl-skew
		Usage: optional
		Value type: <u32>
		Definition: Skew in decipercentage which when specified will be applied
		to the final learned capacity.

		- qcom,hold-soc-while-full
		Usage: optional
		Value type: <empty>

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

+3 −1

Original line number	Diff line number	Diff line
		/* Copyright (c) 2018, The Linux Foundation. All rights reserved.
		/* Copyright (c) 2018-2019, The Linux Foundation. All rights reserved.
		*
		* This program is free software; you can redistribute it and/or modify
		* it under the terms of the GNU General Public License version 2 and
		@@ -4628,6 +4628,8 @@ static int fg_gen4_parse_dt(struct fg_gen4_chip *chip)
		else
		chip->cl->dt.max_cap_limit = temp;

		of_property_read_u32(node, "qcom,cl-skew", &chip->cl->dt.skew_decipct);

		rc = of_property_read_u32(node, "qcom,fg-batt-temp-hot", &temp);
		if (rc < 0)
		chip->dt.batt_temp_hot_thresh = -EINVAL;